I set up my Bal 20 & AP One and Mobile WAN. Mobile is a MiFi from Verizon.
At first it worked without too much attention.
Then I setup a dyndns at No-IP.com and changed some passwords on the Bal 20 and AP One.
The MiFi Mobile WAN is now no longer connecting.
The Bal 20 sees the device and says connecting - but I get an error 99.
I have tried numerous restarts of all devices - and the MiFi is connecting if I use it as a standalone hot spot so the ISP is good.
I removed the dynamic DNS settings from the Bal 20.
Still it won’t connect - but it did fairly easily on first install.