Hi, I have tried to downgrade and upgrade my Mozilla Firefox in order to download HTTP Fox but it turned out to be this add on not compatible with my version of Mozilla Firefox. It suggested me to look for older version of this add on but it does not work too. Can someone kindly assist me in this issue? Thank you so much. I’m urgently need to use this add on for my work. Thanks
What do you use this add-on for? Have you tried using the Firefox Developer Tools, or other add-ons?