I have two EAP683 and two EAP670. If I connect the EAP683 to POE switch they will show a status of wireless on controller app.

The EAP670s will show wired plugged into same poe switch. If I connect the power supply to the EAP683 they will show status wired. 

I've tried this on the bench with good, short cables with a different TP-Link unmanaged POE+ switch and get exactly same results.

On controller if I turn off the mesh option the EAP683s will show offline.

I am a bit confused why?