Hello,

I recently added 200+ users in Yellowfin. Users started to complain that they're not able to log in with following error message: "The email address entered is not known on the system". When I go to admin console I can actually see those users (set up correctly). I tried 2 things:
1. Reset their password - their account just goes missing. However, it is still there in any of the search drop downs (e.g. when adding users to a user group). End result: users are still unable to log in.
2. Delete account and recreate it. Seems to work (users can log in) but there are two instances of that user in search drop downs after that step.

In addition, I updated around 90 email address to be only lowercase. Is it possible that this had something to do with it?


Do you have any idea why this might happen?
How do I get rid of duplicate users in drop downs (don't want to delete working one, but the "ghost" one)?
How do I prevent this from happening again?


Thanks in advance,
Ren�