You cannot join the fellowship because this feature is available for Brain Knight or higher membership level.
You can solve this unpleasant situation by upgrading your membership.
Grey background - the member has been inactive for more than 30 days.
(*) Each player can be a member of only one team of the same game type. You are already a member of Backgammon team of ! ! ♥PepperMintPatty's Challengers♥ ! ! fellowship.