5 つ星中 1つの評価を受けています

Downloaded, installed, visible in Firefox add-ons

But not on YouTube.

Problem for W7 64bit??

I have many users that are using the addon on WIndows 7 64 bit systems and i never got any issues from anyone.

Can you please try reinstalling it. I will check again thoroughly on Windows 7 64 bit and will get back to you! Thanks!