I believe that the replay function for USE is not working, at least not for the main event scenario. IT might work for some of the shorter scenarios.
There were some games getting "locked" because the log file got to large I think. This game is much larger in all the bits it tracks in the log file and that kind of precludes a complete play back. IT would be nice if we could get it, and if we did also would be nice to a t least set the time interval for each move to more than what seems like a nano-second. The module does keep the rules from being "missed" so there is that. and any time you need to respond (i.e. make a decision as a non-phasing player) it does stop and pass to your "turn".
You can scroll through the log back a far bit if you want to, I do that some times to see a specific Die roll split on a combat etc.
If you want a true replay type game I fear it will have to be on another platform for this game.