Welcome to Project-GC Q&A. Ask questions and get answers from other Project-GC users.
If you get a good answer, click the checkbox on the left to select it as the best answer.
Upvote answers or questions that have helped you.
If you don't get clear answers, edit your question to make it clearer.
The script already works with GM4 and I use it regularly. Just update the extension and the script (or uninstall and install again).
for me the same, changing to tempermonkey and everything works fine.