Again I have belt problem...I had one day again almost black belt and then It skipped into green! Now I have blue belt so what I wrong with this belt system?

you are the only one with the problem I think

1. no he is not
2. you did not help him with that

I think you need to contact an administrator who'll fix that for you.
Send a mail to [email protected]

Ok thank you

There is no "You're the only one with this problem".

Even if a problem may be a rare breed, it means there is a problem, and it can be fixed.

Yep, this is apparently becoming common enough. Mailing Support with details should be enough to fix it.