First up I love Zoiper! I've tried most of the voip apps on the market. They all have their quirks and registration failure issues when changing from wifi to 4G, but I seem to get the most stability with Zoiper.
I was using the old 1.53 app because I liked the old interface and it had been stable enough. However, lately I kept getting registration failure's changing networks and would have to force close the app. So today I upgraded to version 2.5.38 and paid for the Pro version.
I bought a subscription to the Push Notification service as it would be nice to use this feature for more stable registrations and battery use. However, I just get "registration failure" when I enable the Push Notifications setting.
I checked and voip provider isn't blocking the proxy IP 18.104.22.168. But they don't officially support Zoipier (only Bria Stretto). Is there something I'm missing in the proxy setup that would cause registration issues?
What do you think?