Superb blocker of inappropriate content. The best I've seen without any need for manual settings. The password lock is nice but on FireFox it still is not capable of protecting itself from someone accessing the add-ons manager or by the 'Firefox refresh' through about:support or the 'Restart with add-ons disabled' from the 'Help' dropdown in the settings. The add-on also does NOT work in private-tabs. If the function in private tabs and security can be improved, this would easily top all as a complete package and no need to look elsewhere.

it disappears from my extensions after a few times opening firefox

Nice and simple, but for me it really needs a function to block the add-ons page of with a password, just like chrome.

Good for controlling yourself while studying.

Does not seem to always work... i tried blocking heroesofrpg but nothing

I loved this add-on, but it is currently not working. It keeps saying "The add-on could not be installed because it appears to be corrupt". Can you fix this?.

When I try and download the addon now it also says : "Download failed. Please check your connection."

Please update so I can continue to use this add-on!