@eddieaoneill Never a wise choice to use it as a repeater. This is made for P2P. Even it has the mode repeater/bridge, they're not recommended. https://community.tp-link.com/en/business/kb/detail/302

@TI-FINEPACK Since the V4 controller, it is called the SDN controller. That integrates routers and switches. Some of the old EAPs are not supported. V5 Controller compatibility list:...

@TomGraz You cannot take out hte root AP. The root AP must be wired and provide the uplink for the other mesh. https://www.tp-link.com/en/support/faq/2949/

@hitten Can you share the config screenshot with the community? Have had no trouble since V4 Controller. When the portal is created and clients are connected, any IPs on the device? Even you don't...

@PeterOz Try MAC clone if you have one device that can work flawlessly on the modem. 'Cause the modem has some kind of security measures that will stop unknown MAC to get Internet. To resolve this is...

@97kviewers I don't have trouble like yours. I tested on my software controller. Randomly put 192.168.X.X/home. I can save it. Check other parameters. No errors at all.