I don’t know.
I can give example of Amazon, for movies when going to Amazon I first see this

I click on one of the movies I see and quickly analyzing comes up and then a download window.

Some services are more involved, like Netflix.
First I see:

Then hover over one with mouse and see:


Put the mouse at here and click, and it will start to analyze, and then download window will pop up.

If not working, then maybe try uninstalling and install again?
Or try clear temp folder through streamfab settings.
No more info supplied, so locked.