@d0ugmac1 If that doesn't work, and you don't want to just rebuild your controller from scratch then revert your OC300 to 5.7.6, restore your controller backup. After the old controller is back up...

@d0ugmac1 My first approach would be to factory reset the controller and let it get a DHCP ip from your 192.168.20.x subnet. Login on this new IP, check your router's clients list to see what the ip...

Ok, immediately take another backup of the new controller. Secondly take note of the new Admin password for devices, you will find this in the controller's site settings. With those 2 things done, it...

Think you already have my opinion, but those thick concrete walls will act in your favour for coverage. Wall mounting above obstacles is ideal. HD models recommended for areas where more than 30...

Is your management LAN a subnet other than the default of 192.168.0.0/24? Is your controller statically configured or does it use DHCP? Did you make a backup file for controller before the upgrade?

Yes, I think a 'forget' i(or hardware reset) s needed before the AP will talk to the Omada app. You might even find it easy to just migrate the whole site from your Ubuntu controller to the VPS one.