the problem happens with both- users that are imported and users that are also created after the fact. But, what I noticed is that no matter what I type in (in an email address format) to the username field of Joomla, the problem still occurs. For example, if I type in (literally) test@website.com and test123 as the password (a non-existent user) and login, nothing happens, just a refresh. But even if I type in an email that actually is a valid user to CEB it still does the same thing...