Worked fine last year, but v4.21 doesn't work with anything at all. Rated 1 out of 5 stars

Version 4.21 is complete rubbish with whatever YouTube and like sites have done to prevent downloaders from saving files locally. I hesitate sharply to even give it one star, but I can't submit a zero-star rating.

This review is for a previous version of the add-on (4.9.21.1-signed).