Update 6 February 2020
Great addon. Hi, I have a suggestion if possible. Since I use this addon on multiple browsers and because every browser got his own addon repo, it happens that, every time I open a browser, the autosync change the dial of the addons repo. It would be nice an option for/to exclude a single (or more) dial from autosync.
What do you think about it?

I use Firefox, Vivaldi, Chromium and Chrome (and more to test) on both Linux Mint 19.1 and Windows 7

Regards