Developer reply by Oleksandr
Rated 5 out of 5 stars
Please update this add-one I am using it every day but it is not working now after Firefox 57 update. Please Update.
This review is for a previous version of the add-on (5.10).Unfortunately, WebExtensions (the new API for Firefox 57+) does not have the functionality for the correct operation of this addon in Firefox.
But you can install Firefox 52 ESR and enjoy work until June 2018
https://www.mozilla.org/en-US/firefox/organizations/faq/
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