Club Memberships

Go to Settings → Profile (/settings/profile). Your club memberships are managed there, alongside the rest of your account settings.

Check every club you belong to and save. This is what club-conflict checking uses on rosters — a helper or judge sharing a club with someone else on the same contest can trigger a warning, so keeping this accurate keeps those warnings accurate too.

You can belong to more than one club. Unchecking a club removes it from your memberships immediately.