Tried to request a game, message says already supported, but not in any of the lists on here.

I tried to request a trainer for Serious Sam II (not Serious Sam The Second Encounter) and I get a message that says the game is already supported. I tried to search for the game and every Serious Sam game pops up but this one. I tried synchronizing my installed games and this one doesn't appear in my list of installed games. I attached a link to it in the requests and this is the message I get. If there is already a trainer available, why am I not finding it anywhere in the app?