The message in the image below shows the message that was automatically put when trying to see the realm. The only way I was able to resolve this issue was uninstalling the app and reinstall it then login with Microsoft. I recommended this fix to my realm members and they said it worked but went back to what it was after an hour. If its an issue with the new hotfix or with my realm, recommend some type of way to fix this. On my perspective it shows that I can join, which I can. But my cousin's perspective shows the error.