LR website not working with a VPN turned on

When I have a VPN turned on the website says “Failed to obtain user data from server. Please try reloading the page, or else contact Language Reactor developers.”. Whitelisting the LR website from the VPN doesn’t fix the problem. It only works when it’s completely turned off.
Also when the VPN is connected, whether LR is whitelisted or not, the website automatically logs me out from my account and when clicking on the sign in button nothing happens.

The second issue is that when trying to play a file from the media player with the VPN on I get this error