It should be working, so if you haven’t had a single successful generation after a month, something is definitely not right.
First, make sure you’re on the latest UniFab version (4.x), as earlier versions had some stability issues with AI features.
Then you can try:
Reinstalling UniFab cleanly
Trying a different video source (to rule out file issues)
Checking your network connection (since FabCloud features rely on it)
If it still doesn’t work at all, it’s very likely not a usage issue. Please share a log file so we can help check what’s going wrong.