*** THIS WILL MODIFY THE SECURITY OF YOUR BROWSER AND COULD LEAD TO A SECURITY BREACH ***
*** USE AT YOUR OWN RISK ***
- Open Mozilla Firefox
- In the address box, enter "about:config"
- You will be prompted to a warning that indicates that it is dangerous to proceed. Click "Accept the Risk and Continue" to proceed anyway. (see below)
- Type in the search box "extensions.blo" and you will see the results of the search. You are looking for "extensions.blocked.enabled". (see below)
- You want to click on the left/right arrow on the right hand side and flip the option from "true" to "false". (see below) This will enable any/all blocked extensions. THIS IS DANGEROUS AND COULD CAUSE ISSUES WITH YOUR SECURITY AND YOUR BROWSER.
That's all there is too it. You may need to close and re-open your browser to enable this change, but this should work for you.