MLS full game replays

I want to watch full game replays on MLS Season pass. I am using AppleTV through Xfinity (not in a browser, not on an Apple device). However, the only option I get when I select a past game is to watch the (~6 min) recap, rather than the full game. Other discussions have mentioned the ability to select between 3 viewing options, but that doesn't seem to be a choice when accessing it through Xfinity. How do I get to a full game replay?