@ElTom If you you're not going to build a mesh network and planning to use these APs in a standalone mode then you don't need the OC200 controller and the HW in question will suffice.

@davidec Check this guide for details on PoE to TP-Link APs.

@Par098 That's usually a physical connectivity issue. Given your description the joint connection ( kitchen jack ) is probably the culprit. If you use an ethernet cable tester you should be able to...

@HoodDroid That's usually a cable issue - change the cable with a another one (CAT 6) and if the issue persists change the switch port where you're connecting the cable.

@ElTom You'll need to build a mesh network via Omada EAP - see details here. Here's the community for discussing these solutions.

@aidasjonas You should be able to downgrade safely according to these release notes. What you can do is to reset to factory defaults and then re-configure from scratch. If that doesn't help then go...