It looks like there is a bug in the security_assist/helper_php.php file when using mySQL database connections. This issue won't occur if you use mySQLi.
It is missing this line:
$WA_Auth_Separator = "|§|";
You can manually add that back on the top of the page to fix the issue.
I've also fixed it in the live build. If you reinstall the latest version of DataBridge, it should have the updated file as well.