@Joker_1660 That's pretty nomal - TAPO C520WS has 1× 10/100 Mbps RJ45 Port.

@abrayshaw If your ethernet cable is too long this could be due to a voltage dropout over the cable. Try powering the AP by the external power supply and test if any improvement.

@RBot The only solution is to contact your ISP and ask if they can arrange that your receive your publuc IP address on your router WAN port. This usually happens when you're behind a CG-NAT or for...

@synthax The sould be easily mitigated by configuring an IP address reservation if the IP address is within the C64 DHCP pool. IP & MAC Binding is a security mechanism against MAC address spoofing...

@RBot Here's the guide for configuring the remote management via router's WebGUI. The reason that you can't access your router could be that your router WAN IP address is not your public IP address....

@MegaB TP-link doesn't support home grade routers SSH access for configuring. SSH is used explicitly for the Tether app - details.