can not download Rated 1 out of 5 stars

I would like to try this but can't download

This review is for a previous version of the add-on (0.1.1). 

I apologize for the inconvenience. When I checked the issue, as you pointed out, the download link (a green button) was visible from a smartphone but invisible from a tablet like Nexus7. Unfortunately, I have no idea why the such differences occur. However, A similar issue has already been reported on Bugzilla (Bug733276). Please see the following page. Thank you.https://bugzilla.mozilla.org/show_bug.cgi?id=733276