Hi everyone,
I seems to have the same issue. My account on transifex is Ding14. According to my profile I don't belong to any translation team too, but I do can upload the translation. I remember when I joined transifex I entered the Fedora Chinese translation project, there seems to have a join button or something. After I click it, transifex said I'm the member of the team, I can edit the translation now. This guy could be same as my condition.
Is there something I miss too? If so, please tell me.
BTW, it's suck to describe something in English. ^_^