When logging into BingoPlus, make sure you’re using the official URL with HTTPS...

https://sierra-wiki.win/index.php/Should_I_Use_My_Phone_Number_or_Email_for_BingoPlus_Account_Recovery%3F

When logging into BingoPlus, make sure you’re using the official URL with HTTPS for a secure connection. Use a unique password and enable two-factor authentication if available to protect your account