Rated 5 out of 5 stars

per ths el feb. 18, 2021 ·

I can confirm that Google sync resumes to work again if I set general.useragent.compatMode.firefox to false (= the default - I had set it to true before).

This review is for a previous version of the add-on (55.6). 

per Philippe V. (desenvolupador) a feb. 19, 2021 ·

thanks a lot for the trick !