ePMP 3000L blocked

We have installed about 15 ePMP 3000L APs, Management of the equipment is lost, factory reset is performed, but still no access, equipment blocked.

What is mean blocked ?

No CLI or web access is available.

Connect to the cloud and check if it ok ?
If yes than you have to change access mode from http/https to http and I think it will solve the problem.

Did you try default IP of