Bought mp3 option, but doesn't show up, only shows wma?

Hello all. This is my first post to this community, and a new pro tools user. So my question is this, I purchased the mp3 option for pro tools online last night. The purchase went smooth, the transfer to my iloc worked fine and it shows up. It's activated also through my iloc program. The problem is now when I go to pro tools to try to bounce the tracks as an mp3, mp3 is still not am option, burg now wma is option. What gives? I'm using pro tools express 10 that came with my M-Audio black box. Akai edition or something like that. So did I purchase the wrong thing, or am I just doing something wrong? Thanks in advance.