DDNS methods include: sending username password and domain in the clear; and "direct-URL" method where a token is sent from the gateway and automatically picks up the source IP. Why doesn't TP-LInk...

I also want this feature.

I am having exact same issue with two EAP225-V4s, one wired and one meshed. Both use their POE power supplies provided by TPLink, and the OC200 sees them as "disconnected" . They will not come back...