I haven't been given any missions for a week.
I decided to try playing through Steam. The same situation through Steam.
I created a new account and, lo and behold, everything is fine on it.
I log in to the main account and again it doesn't give me any missions, and I can't log in to the fight club.
I think there are no problems in the files. Either something has gone wrong with my character, or I've been banned for something.
I already suspect that support is unlikely to help me.
I've been in this game since the OBT and have never violated any rules. They could at least have written what they didn't like.