I also had problems with PMtoCoins.
I waited overnight for a withdrawal of another coin to move out of the pending section. The whole time I was waiting, the transaction id could not be found by the block explorer. I was so pissed at the situation that I withdrew everything else from that exchange once the first transaction cleared. As soon as I withdraw I get a white screen with a message that says my IP address has been blocked and I can no longer access the site.
I did not try to sort the problem out. I'm fed up and will not be back to that site.