Logged out automatically
Does the CMSB you are using have the membership plugin installed? If so, there's a setting in the plugin that allows you to login to the front-end and back-end at the same time with different accounts. You need to turn that to "true"
$GLOBALS['WSM_SEPARATE_LOGIN'] = true;
Another thing that can cause this is a mismatch of HTTPS settings, as logging in to "http://example.com/" does not log in to "https://example.com/" and vice versa. The first thing to consider is whether or not the site is supposed to be using HTTPS, and then make sure that your configuration is correct. A few things to check:
- Any .htaccess files that are (or aren't) redirecting to HTTPS
- Whether or not the "Require HTTPS" setting is set in CMSB ('requireHTTPS' in settings.dat.php)
Let me know if you're able to make any progress.