If you’re playing BingoPlus on your phone, start by logging in securely: always...

https://sierra-wiki.win/index.php/BingoPlus_Login_Problems_After_Reinstall_%E2%80%93_What_Could_Cause_It%3F

If you’re playing BingoPlus on your phone, start by logging in securely: always use the official site with HTTPS, create a strong password, and enable two-factor authentication if it’s offered