Join league quest bug

Ea don't u know u have a bug in quests section since I started playing this game aren't u gonna fix it it's so annoying that we are not able to get 20k gems. The problem is even if I have joined to clan that quest stays 0/1 and that's annoying, I even tried to leave and join a new clan but ther wasn't any change . So pls fix that bug as fast as u can and don't  forget about compensation too