I have similar issues with this VPN as well. I do believe that it’s a normal thing that happens with any VPN because of the servers and IP addresses. My phone voice message app does not work with it as well.
Like you, I would like to know if there’s something that needs to be done to make this more streamlined.
Perhaps there are settings that need to be turned on or off.
Hopefully, someone will be able to provide feedback on this.
THank, you…. Ruth