If you’re playing BingoPlus on mobile, always use the official site with HTTPS...

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 mobile, always use the official site with HTTPS and create a strong password—enable 2FA if you can for extra security. Keeping the app updated ensures smooth play and fixes bugs