I installed VPN for the first time yesterday so I'm new to this.
My main EMail account (@btinternet.com) on my android phone then started telling me to log in again because my credentials were wrong (I knew that they weren't and they were idential to those on my pc without VPN and this was fine.
Other EMail accounts (not @btinternet.com)on the phone were fine. I spent several hours struggling with this, including deleting the account and re-creating it twice, each time being told that my EMail or password were wrong, until I eventually realised that it might be a VPN issue. I turned VPN off and everything worked again.
Is there a setting somewhere that I need to fix that will allow me to access my btinternet.com EMails when VPN is enabled?