Why doesn't this extension work in Firefox browser?

I receive more advice about potential problems from this extension than from others.

Useless, Worthless, Inadequate, Purposeless

I don't think this company belongs here.

Couple years ago it was nice to have addon, but now it become useless, not doing what it suppose to do

This addon sells user data. Do not use.

The Best Dating service available ,To CF,I thank you very much ·

dosent work on linux (youtube fullscreen)

I am using this extension more than 8 years now, today i realize that in order to use this extension properly you have to pay to gain premium , so even a single click on this extension requires premium, sorry WOT but you have destroyed that extension due these years. i cannot even attach the icon next to the address bar , then give me a reason to keep using that extension??? sorry but i got too disappointed .