@thefunkygibbon Replied to you on your another thread.

@thefunkygibbon Have you ever updated the firmware to 1.3.1 of the Deco M5; after that, do you still have the same issue. Please draw me the current network diagram, including the switch. Besides,...

@spicy61 After you setup the TD-W9970 as pure modem and Deco E4 as main router, how do you connect these devices together? Try to remove the powerline network and the switch to test the performance...

@Baybutt Hello, this issue is caused by the IP address conflict detection mechanism in some cases. It should be fixed already. Good day.

@avinet I see, thanks for your reply. Cause the error code cannot be fixed via hard reset or reboot; to solve this issue quickly, it is suggested to contact the retailer or the local tech support to...

@Jelmer You are welcome.