So I have a setup with a Linux software controller, 3 EAPs, a switch, and a gateway. Everything was connected and working correctly.
However, after some time (sometimes just a matter of hours), I check the controller page and a device (usually the router) shows as "Adopt Failed". If I hit Retry, I enter my account username and password, but it says it's incorrect. If I enter the username/password of the device before it was adopted, it also says incorrect. The only way to connect it again is to do a hard reset on the device itself, then manually connect, allow it to be managed by the controller, and then adopt it again. Then it will work for a short time, and the whole process repeats.
Any ideas??? I'm ready to return my router at this point.