I managed to adopt them. I did nothing, just kept retrying for about 1-2h. This is pretty dumb. There's probably a bug somewhere. For anyone else reading this, here's a port breakdown for the Omada...

@shberge The official docs mention UDP 29810 & TCP 29811-29813. Do I need to open TCP 29810 & UDP 29811-29813? Is the documentation wrong?

@shberge I can verify that the ports are open and the sevice is accessible, there's not much more I can "check" on the firewall. I was hesitant to reset the APs at first, but I did it anyway, and...

@Fae Thanks for the suggestion but that is already enabled. Does the Controller need to talk back to the APs? should the EAPs be available to the controller in some way? Because they are not,...

@John1234 I already went through that document, there's nothing helpful that I haven't tried. I find the recommendations to ping stuff particularly useless since ICMP is not used for adoption, only...

I have now updated both EAPs to 1.0.6 Build 20210729 Rel. 64026(5553) and I have the same issue. It fails to adopt with the same errors.