Worked like a charm when I first deployed the extender, after a few minutes the 5Ghz detection stopped working.

Reset almost a dozen times and wouldn't work at all. Tried latest firmware from the support page to no avail, also upgraded to beta firmware provided in one of the support threads in the community, regarding the same issue, that claimed to solve the problem, no dice. 2.4Ghz still working as intended, no problem there.

Also added additional cooling because temps were higher than expected.

Connection to tplinkrepeater.net also stops working after a few minutes, internal IP doesn't connect either. Still responds to pings thought.

Would greatly appreciate any help.

Thanks!

Source signals coming from 

SERCOM FG6122TM

• SSID: Seraphidia / Seraphidia 2.4
• Security: WPA2 
• Mode: 802.11a/n/ac mixed
• Channel: Auto
• OBSS: Enabled

RE580D Setup:
SSID: Seraphidia EXT / Seraphidia 2.4EXT

These are the logs since the latest reset:

Logs:
0 days 00:07:50      OTHERS     INFO    User cleared up all the logs. 
0 days 00:07:50      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G. 
0 days 00:07:50      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G (WPA). 
0 days 00:07:53      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) exited 5G 
0 days 00:08:00      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G. 
0 days 00:08:01      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G (WPA). 
0 days 00:08:04      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) exited 5G 
0 days 00:08:04      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:04      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:04      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:04      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:06      WIRELESS   INFO    STA (MAC:0E:73:71:E6:F0:45) successfully connected to 2.4G 
0 days 00:08:06      WIRELESS   INFO    STA (MAC:0E:73:71:E6:F0:45) successfully connected to 2.4G (WPA). 
0 days 00:08:08      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:08:08      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:08:26      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G. 
0 days 00:08:28      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) exited 5G 
0 days 00:08:30      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:08:30      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:08:32      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G. 
0 days 00:08:38      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G. 
0 days 00:08:40      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 3 
0 days 00:08:41      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G (WPA). 
0 days 00:08:42      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:42      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:42      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:42      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:BA:52:84:55:BA:63): 0, 7 
0 days 00:08:51      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:08:51      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:09:12      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:09:12      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:09:16      WIRELESS   INFO    Sent DEAUTH to 2.4G STA (MAC:0E:73:71:E6:F0:45): 0, 4 
0 days 00:09:33      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:09:33      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:09:34      WIRELESS   ERROR   5G failed to connect to the front end: ASSOC 5, 0. 
0 days 00:09:34      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:09:34      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:09:54      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:10:15      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:10:36      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:10:39      DHCPC      ERROR   DHCP detection failed. 
0 days 00:10:39      DHCPS      INFO    DHCP server started 
0 days 00:10:39      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:44:85:00:3E:9C:D4): 0, 3 
0 days 00:10:41      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G. 
0 days 00:10:41      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G (WPA). 
0 days 00:10:41      DHCPS      INFO    Received a request packet from 44:85:00:3E:9C:D4 
0 days 00:10:41      DHCPS      INFO    Sent an NAK packet 
0 days 00:10:59      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:10:59      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:10:59      DHCPS      INFO    DHCP server stopped 
0 days 00:11:00      WIRELESS   INFO    Sent DEAUTH to 5G STA (MAC:44:85:00:3E:9C:D4): 0, 3 
0 days 00:11:02      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G. 
0 days 00:11:02      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G (WPA). 
0 days 00:11:03      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 5G (WPA). 
0 days 00:11:06      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) exited 5G 
0 days 00:11:07      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 2.4G 
0 days 00:11:07      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 2.4G (WPA). 
0 days 00:11:20      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:11:20      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:11:41      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:12:03      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:12:03      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:12:18      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 3, 0. 
0 days 00:12:23      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:12:24      WIRELESS   ERROR   5G failed to connect to the front end: ASSOC 5, 0. 
0 days 00:12:24      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:12:24      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:12:24      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:12:24      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:12:45      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:12:45      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:13:06      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:13:06      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:13:27      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:13:27      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:13:48      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:13:48      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:14:09      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:14:09      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:14:30      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:14:30      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:14:51      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:14:51      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:15:01      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:15:02      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:15:12      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:15:13      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:15:22      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G. 
0 days 00:15:22      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) successfully connected to 5G (WPA). 
0 days 00:15:34      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:15:34      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:15:55      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:15:55      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:16:16      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:16:16      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:16:37      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:16:37      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:16:58      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:16:58      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:17:19      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:17:19      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:17:40      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:17:40      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:17:46      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 3, 0. 
0 days 00:18:01      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:18:01      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:18:10      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:18:10      WIRELESS   ERROR   5G failed to connect to the front end: ASSOC 5, 0. 
0 days 00:18:10      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:18:22      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:18:39      WIRELESS   INFO    STA (MAC:BA:52:84:55:BA:63) exited 5G 
0 days 00:18:40      WIRELESS   INFO    STA (MAC:0E:73:71:E6:F0:45) successfully connected to 2.4G 
0 days 00:18:40      WIRELESS   INFO    STA (MAC:0E:73:71:E6:F0:45) successfully connected to 2.4G (WPA). 
0 days 00:18:44      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:18:44      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:19:05      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:19:05      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:19:26      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:19:26      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:19:47      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:19:47      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:20:11      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:20:11      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:20:16      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) exited 2.4G 
0 days 00:20:30      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 3, 0. 
0 days 00:20:32      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:20:32      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:20:36      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:20:36      WIRELESS   ERROR   5G failed to connect to the front end: ASSOC 5, 0. 
0 days 00:20:36      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:20:53      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:20:53      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:21:14      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:21:14      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:21:35      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:21:35      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:21:56      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:21:57      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:22:18      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:22:18      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:22:38      WIRELESS   INFO    STA (MAC:44:85:00:3E:9C:D4) successfully connected to 2.4G (WPA). 
0 days 00:22:39      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:22:39      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:23:00      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:23:00      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:23:14      WIRELESS   ERROR   5G failed to connect to the front end: AUTH 5, 0. 
0 days 00:23:14      WIRELESS   ERROR   5G failed to connect to the front end: ASSOC 5, 0. 
0 days 00:23:14      WIRELESS   ERROR   5G failed to connect to the front end: SET_SSID 1, 0. 
0 days 00:23:21      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:23:21      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82 
0 days 00:23:42      DHCPC      INFO    Sent a detection for DHCP. 
0 days 00:23:42      DHCPC      INFO    Received a DHCP offer:Server ID is 54.Assigned IP address is 192.168.1.82