DropGalaxy added multiple domains that it redirects between, you need to add @match *://dropgalaxy.in/* and @match *://techssting.com/*

Also at else if (window.location.href.includes("https://dropgalaxy.com/") add ||
window.location.href.includes("https://dropgalaxy.in/") ||
window.location.href.includes("https://techssting.com/")) like you did with DropAPK and Mixloads, I tried this myself and it worked

Appreciate it!!! Changes have been added!