When returning to Bingoplus after a break, start by double-checking the website...

https://high-wiki.win/index.php/Bingoplus_Keeps_Asking_Me_to_Sign_In_Again:_How_to_Fix_the_Sign_In_Loop

When returning to Bingoplus after a break, start by double-checking the website URL to ensure you’re on the official site. Use your saved login info carefully, but if you’ve forgotten your password, choose the recovery option to reset it securely