Missing content and Vanity issues

I purchased the Ultimate edition of UFC 6 and the description of the game states I should have immediate access to Randy Couture, Ken Shamrock, as well as other cosmetic items like fighter skins and things like that. All of this content is locked on my game and I am being prompted to buy these items that I should already own. Also on UFC 5 you were able to wear vanity items in actual fights. Is that not a thing anymore? Please let me know how to gain access to all of my pre order content