@warllo Some basic L3 features, like static routing, DHCP server, are supported on controller. I guess TP-Link haven't updated their website, but you can refer to other Omada SDN switches. Normally,...

Try rebooting before resetting. Are you still able to enter the management interface?

@AKAsysad TL-SG2008P supports POE configuration. It was mentioned in the UG: https://static.tp-link.com/2020/202011/20201103/1910012903_T16_T26_UG.pdf

@Ser Unplug port 1, will the router still have internet? If yes, that means line 2 is good, and port 2 is also good. If no, you can plug line 2 to port 1 and check if it works. If still not working,...

@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...