I'm a member of Gaming.SE, but I'm not able to be a member of Meta Gaming.SE. I asked a question on here and it's migrated to Meta Gaming.SE, but I cannot handle the question because it's not considered mine. I also can't login or sign up in Meta Gaming.SE because it seems I'm already a member of it.
Can anyone help me solve the problem? Previously I thought every Stack Exchange site membership means you are member of its meta too.
This is from Meta Gaming.SE:
But I have a migrated question from here to there.