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 don't want other users to know what you are doing you can change into cloak mode in Settings (paying members only). (pauloaguia) (show all tips)