Not been able to connect with Dappnode WiFi

This is a long standing problem.

I can access the daapnode via VPN.
I can connect to the WiFi.
Yet when I try to access the uses interface it says NOT REGISTERED.
Changing password from here has no effect:
http://my.dappnode/#/wifi/wifi

Shall I do something to register the WiFi? This is a very long standing problem it would be nice to getting it fixed. I have access to admin via VPN.