Only paying members can join fellowships and take advantage of all their features (internal tournaments, ponds, or stairs, private discussion boards, team challenges etc.). If a player's paid membership expires, he remains a member in all previously joined fellowships but cannot use any fellowship functions, until his membership is renewed.
(hide) If you want to play a game with an opponent of a similar level, you can define a required BKR range for a new game invitation. Then nobody with a BKR outside this range will be able to see/accept it. (Katechka) (show all tips)