Hmmm just trying to give this a try. I am using 1-Voip at my home office and it works great.
This app however doesn't seem to allow me to register. I select which provider I have, enter my working username and password and get:
Registration failed (Unauthorized 401)
With no clue what else to try or correct. I know the username and password is correct as it is the exact same one used to log into the providers website and my account.
The app also says null registration failed when just looking at it when is first run.