FC Mobile League Mission Not Completing Despite Being in a League

I am experiencing an issue in FC Mobile where, despite being a member of a league, the “Join a League” mission does not register as completed. No matter what I try—leaving and rejoining my league, joining different leagues, and refreshing the game—the mission still does not count as completed.

This is a major problem because completing all the missions rewards 20,000 gems, which is a significant in-game currency. Without fixing this bug, I am unable to claim my well-earned rewards.

EA, please address this issue immediately! This is extremely frustrating, and I expect a solution as soon as possible. Other players are also affected—please fix this!