OK, then it is clear: coinmarket.io ONLY WORKS for people who signed up first... for others like me, it doesn't work.
Or it does prioritize the deposits and withdrawals favoring some users...
http://prntscr.com/2nalkaMy deposit appeared as pending within seconds... but it is staying as pending for more than an hour now. If Skyvaleey made a deposit of 1000 now, and it was already processed, then I think things are quite obvious.
STAY AWAY from coinmarket.io.... or go for it if you want to try your luck and see if you are user A whos deposits/withdrawals are processed, or user B whos deposits/withdrawals are not...