Works great on chrome, not so much on Firefox Rated 3 out of 5 stars

For the last week or so all I get is "An error has occurred." when clicking the button on an Amazon product page. The same page works fine on Chrome. The other extensions I have installed are Umatrix, Ublock Origin, and Fakespot.

This review is for a previous version of the add-on (2.9.5).