Open source and has been working flawlessly for me for years.

doesnt work

Did not work at all for me.

I have managed to get it to work all of one time.

𝒂𝒍𝒇𝒊7 Of course you have to repay, you nincompoop!

What you think we're running here, some kind of charity?!

When you came to see the boss, did he have a sign on his desk saying "Fat Tony's Make A Degenerate's Wish Foundation"?!?! No, of course it didn't you schmuck. Do you remember what it did say? "DON'T FUCK WITH FAT TONY" didn't it, you simpleton.

What kind of question even is that? You insult Fat Tony with a question like that. Which is not a smart thing to do. In fact it's a very stupid thing to do. The only thing stupider would be not paying Fat Tony his money.

If you don't want a visit from Jittery John, I suggest you pay Fat Tony on time, and don't ask any more stupid questions. Incase nobody aint told you, you DON'T want a visit from Jittery John.

I do not know yet I have to repay?

"Scroll Left" go to User Script:

mouseDown.target.scrollLeft += 60;
var result = { repeat: true };
result;

and then go to 'other gestures' enable wheel gestures, scroll UP -> 'your user script'

"Scroll Right" same as above but -=60 or whatever number of pixels you want scroll.

Dear developer. Your extension looks good, but could you please add ''Scroll Left'' and ''Scroll Right'' commands? I have a mouse with two additional buttons on its side, so I wanted to use these buttons to scroll web pages left or right.

Super!