doesn't work

Garbage

A click bait to the so-called "proud owner of this project" website which is in fact a forked version of AlphaClicker

It does not work as an extension. You need to download a program from their website and install it. The program is 'free,' but it uses 'a small amount of your computer's processing power, storage, and bandwidth' for purposes like crypto, indexing, research, and more. Now you know.