Push Proxy does not seem to work with my provider (voip.ms) and in fact prevents me from making as well as receiving calls, giving message "unauthorized". There is a checkbox to disable Push Proxy in settings, but it re-enables itself on restart, and after a while of being idle, making it impossible to use my phone as a SIP phone. I wonder if it is because I subscribed to the service, but since there is no way to unsubscribe immediately, I cannot check if this would make the kill stay.
Anyone else with this issue?