Developer reply by Marco Zanon
Rated 5 out of 5 stars
I was skeptical of this to start as to sync with Google I had to create my own Google console app. In fact the instructions were clear, and I was able to link to this account without problems.
It takes a bit of time, but it's better than copying csv files around.
Thanks for Your review!
MZ
To create your own collections, you must have a Mozilla Add-ons account.