Can't leave League – Error 200013 (need fix before Thursday)

Hi EA Support,

I’m playing EA SPORTS FC Mobile and I’m having a problem with the League feature.

Every time I try to leave my current League, I get the following message:
"You are not a member of this League (Error 200013)"

But in the game, I’m still shown as being part of that League. I can’t join a new League or claim rewards. I already tried restarting the game, reinstalling, and even clearing app data — but nothing worked.

Please help remove me from the bugged League or reset my League status.

My info:

- IGN (In-Game Name): Ronaldo
- User ID (in settings): [Removed]
- Device: iPhone  
- OS version: IOS 15.8.3
- Country: Vietnam

This is urgent because I need to join a new League before Thursday to receive event rewards.

Thank you for your help!