Developer reply by cg-addons
Rated 3 out of 5 stars
I can't download all videos in 1080p, only the ones on my account and some older ones...
This review is for a previous version of the add-on (5.7.26).Please try v5.7.27:
https://addons.mozilla.org/en-US/firefox/addon/complete-youtube-saver/versions/
If it doesn't fix your problem, contact us at cytsaver@hotmail.com
To create your own collections, you must have a Mozilla Add-ons account.