When going to restore your account, you may find that there are more Database Users than expected. This is because some panels create Database Users for every available IP/Hostname on the local server. In cPanel, you can see this by going to WHM -> PHPMyAdmin -> Mysql -> Users and notice that each "Database User " has multiple entries for each host, i.e. user@localhost, user@IP, user@domain, etc.
JetBackup uses MySQL directly to backup the database users and will find all of the entries from the Mysql -> User table that match the account name. This is why you see multiple entries being restored for a single Database User.
