Pokeit works by reading the hand histories that can be obtained via email from KingsClubPkr administrators. KingsClubPkr does not make hand histories available while you play so Pokeit can only be used for post-game review (No HUD).
Unfortunately there is no official channel for obtaining hand histories from KingsClubPkr. A hand history download option is not yet available within the poker client and there is no general support email address for the private club. If you'd like to request hand histories, have your agent reach out to KingsClubPkr on your behalf to see if they can be provided over email.