This add-on was great until firefox blocked it!!!! When will it be available again to use with firefox?

great tools

DuckDuckGo just works, nothing else to say. When something works good, it doesn't need to be fixed!

Despite what others keep saying, this add-on was NOT disabled because of a Firefox update. The problem is that they bizarrely (how it happened hasn't been revealed yet as of 4May2019-13:00) let a signing certificate expire.

This in turn caused ALL add-ons to be disabled because when they were checked for compliance with Firefox's policies last night at midnight they were ALL flagged as "unauthorized" (or "non-compliant") add-ons.

A fix has been issued. Simply go to Tools (press the Alt button to see the menu at the top of the browser) > Options > Privacy & Security and scroll down to 'Firefox Data Collection and Use' and make sure a checkmark is in 'Allow Firefox to send technical and interaction data to Mozilla' which will un-gray 'Allow Firefox to install and run studies' which should then also have a checkmark.

Close and re-open Firefox. To see if the Hotfix got applied, go back to same section as before and click 'View Firefox studies'. You should see an entry about 'hotfix-update-xpi-signing-intermediate-bug-1548973•Active'.

Your add-ons should now be re-enabled and working.