I have an omada network running with a hardware controler (oc200) and 3 ap's (eap620). I want to add an eap 610, but the problem is that I cannot access the admin panel due to a 403 forbidden message. Permission denied, omada software is running. webser is forbidden. I have reset the ap and could enter, but after a short period it shows the same message. I was able to upgrade the firmware, but still problem persists. I turned off the oc200, but it does not help, same message. It looks like another controller is in charge, but I have nothing in my network. I cannot see the controller in the omada software, so there is no way to adopt.

What could be wrong here?