Can't get Replays to work

Hi!
I’ve been following this tutorial A new, community-hosted Unreal Engine Wiki - Announcements - Unreal Engine Forums to get a replay system setup in my game. I’ve done everything as it said but when I try to fetch the list of replays, I always get 0 results. I’ve placed debug messages upon completion of the functions calls to Start and Stop Recording, so I know that’s happening. Can’t fetch the list though.

If I bypass all the FNetworkReplayStream business and just try the regular DemoNetDriver method. When I pass in the replay name to be played to the function, it just shows a still shot of the level - no movement, nothing. So I’m not sure what’s going on there.
Really confused about this and I have absolutely no idea how to go about making a replay system. Any help troubleshooting this or a nudge towards a tutorial or a not-outdated source that I could go through to set it up would be greatly appreciated.

Thanks!