Greasy Fork

this is possibly a great script, but doesn't work because you have a bad "grant":

// @match https://www.amazon.com/*

// @grant none <--- this should be removed

// @version 1.5.1

// @author SH3LL

// @grant GM_xmlhttpRequest <--- if the "none" is not removed, this is ignored

// @namespace https://greasyfork.org/users/762057

Thanks, I removed the double grant. Anyway the script was working for me (firefox esr 78.13.0 debian - Violentmonkey), maybe the problem for you is another, try to investigate, I'll be ready to fix.

I tried it on Chrome + Tampermonkey, so it must be because of how Tampermonkey vs Violentmonkey deals with it.
now it's working - thanks for fixing! :D