App not working

[Polytracker]

Ive installed the app and enabled it in nextcloud (V24). I have disabled the viewer app (only way to do this seems to be to delete the folder from the server). However, which I click on a video file now, it just downloads the file it rather than opening it in a player. I much prefer the look of this videoplayer, so it would be great to be able to get it working. Tried in Firefox and Safari with the same results.