If you're having issues with ITFlow, please reach out on the Forum - in addition to the main developers, we have active community members that can help solve your problem. When raising an issue in the Forum, select the tag 'Support' unless you're certain the issue is a bug.
Monthly donators may alternatively log tickets in the private support portal.
At a minimum, please tell us:
If you're still able to access ITFlow, we have a page at /admin_debug.php that allows you to easily provide the technical info.
It is usually helpful if you can provide specific error logs generated as a result of the issue. To do this:
tail -F /var/log/apache2/error.log