Hi @RedHotChiliP, sorry for keeping you waiting first of all but I'm afraid there's nothing to be fixed here .
The mission sais "Reach a flop with at least 4 other players in a Hold'em cash game" however the hand Id that I received via PM shows only 4 players in total at the table, you and another 3. You were one player short to complete this one.
Other, 4 OTHER....that word was invisible to my eyes, I swear!
Oh damnit... back to the cash-tables again.... well at least there´s a double trouble freeroll in the not so bright future... hahaha
Just delete thread then.