Using the Android 'Always On' and 'Block connections without VPN' settings for DVPN caused the app to fail to make a connection to wifi.

[Mustard5]

Describe the bug
I set up DVPN yesterday on Android and purchased some credits through the app. Everything was functional. I normally set up the 'Always On' and 'Block connections with VPN' settings in Android. I left this phone (No Sim card) on wifi sitting on my table overnight and upon trying to use the phone in the morning found that the internet was not functioning. I checked DVPN and it was disconnected. I attempted to connect and it could not load account details. The notification for the problem of retrieving account details remained on the screen and only gave me the option to 'Retry'. I could not see how to close the error dialogue to view any of the settings on the phone. (although I did accidentally close the prompt while fiddling around with it).

In the end it was necessary to go into the Network settings of my Android phone and turn of 'Always On' and 'Block connection without VPN'. As soon as I did that, I began receiving notifications again and I was able to connect to with Sentinel DVPN to retrieve account details and the app was functional again.

To Reproduce
Steps to reproduce the behavior:
I've attempted to reproduce the bug shortly after fixing it, but turning on the Android VPN features again did not give me the same issues. I'm unsure what serious of events leads to the problem.

Expected behavior
My expectation was that using the built-in Android VPN features was supported by the app and perhaps even necessary to maintaining a secure connection at all times.

I also expected that I could close the error dialogue to access other application features.

Screenshots
If applicable, add screenshots to help explain your problem.

**Operating system

Android 11