Fortimail Cloud mailbox exceeded license count.

Forticloud Support gave me this as a solution: 

Well, this did NOT work.

Could anyone here provide a solution/fix for this?

Can this be ignored?

Will it have impact on performance?

How can one reduce the amount back to max 110?

How can i prevent further growth?

N.B. I am seeing weird variations of a work email address, with different characters added in the email address itself thus creating multiple copies. For example: jbrown@work.edu.ca is the official email address. Now i am seeing in the FM cloud active user mailbox list j-brown@work.edu.ca, jbrown123@work.edu.ca , j.brown@work.edu.ca and it goes on and on for others. This is unacceptable.