Questions around synchronizer LOB

Hello Can some one help answer the below questions ?

Is the limit of 10 LOB users is hard requirement ? Can we buy additional LOB user licenses ? I am guessing only 10 LOB users are the limit per conjur cluster.

Does Conjur or Cyberark sends a notification email if 6000 accounts limit per LOB user is reached ?

Does the 6000 accounts also include the password versions ?