Thanks for your rating. It's great to hear that you like the add-on. 😀
As you correctly noticed, you can access the extension with the shortcut Ctrl+Shift+F10 by default. This hotkey can already be modified in the Firefox add-on settings. See https://support.mozilla.org/kb/manage-extension-shortcuts-firefox for more information.
It would be glad if you could upgrade your voting to 5 stars if that solves your problem.
If you have further issues or questions, feel free to ask or suggest a feature by opening an issue on https://github.com/rugk/offline-qr-code/issues. Thanks.
