@Soundman32 If you connect WAN/Internet port of Archer C20 to a modem via an Ethernet cable, and then want to connect EAP to C20's Wi-Fi, that is impossible because EAP only has access point mode....

@rtinsky Your router's IP is 192.168.0.254, why you set static routing to 0.1? Besides, do those 3 VLANs still have internet if they can't access the router? And did you set management VLAN to...

@WAQASPK It's absolutely impossible for a wireless router to transmit for 2 km with 360 degrees. Long distance transmission needs to overcome a lot of challenges, mostly the environmental...

@PavelV Did you upgrade it online or by uploading the firmware file manually? Going to upgrade it as well, want to confirm more details. Thanks!

@rafalee Are you still able to log in to the web interface of CPE510? If yes, you can upgrade its official firmware: https://www.tp-link.com/en/support/download/cpe510/v1/#Firmware If you can't even...

Have you checked if the all the cable connections from dlink 612 to your OC200 are good? You can simplify your topology, connecting OC200 directly to dlink612 to test. And you can remove all devices,...