Status update, They sent me two replacement Keys last night about 5:30PM
one of them worked for black ops II, however the replacement they sent for the second half of the order was already used


Nice to hear that now atleast one problem was fixed.
I actually always had good experience there, and also won a game for leaving a review (Metro Last Night). I bought serveral games including:Dynasty Warriors X, Far Cry 4,Battlefield 4 and GTA 5.
However every single one needed about 3 days to get delivered to me. But all worked fine.
I think there is no way to proof if you or CJS used the key, there isnt such a log, so if you get a used one youre probably fcked (had that problem with G2A.com)
Well then, good luck!