Greasy Fork is available in English.
Automation of actions for the game Hero Wars
In Opera's extensions menu, enable developer mode for Tampermonkey to work correctly. Or use this extension - https://chromewebstore.google.com/detail/tampermonkey-legacy/lcmhijbkigalmkeommnijlpobloojgfn
This script works great on the firefox browser, but as soon as I tried to use it on the Opra GX browser, it does not work. Also Violent monkey says Opra GX does not support it, and only tamper monkey works.