Thanks for the answer.
Sadly it didn't work, though I have recognized this as a bug in version 6.2.1.3
I moved the AP to a controller running 6.3.1.0 and configured it. Worked perfectly.
Moved it back to the 6.21.3 controller and it stopped working.
So it seems I have to find a window to update the controller.
While we are on the topic of 3G/4G does anyone know how to get a ZTE MF821D to work?
At the moment there are no supported 3g/4g USB modems we can buy in Sweden which work with Telenor
Would much appreciate any hint on how to get this working.
The Huawei e1750 was our last one in stock and now we can't connect any more customers.
/Jesper