It looks like it will take some time to recover. I have been away from software development for a few months for personal reasons, but when I came back, it seems that from Firefox ver.133 onwards, it will not work unless it complies with the security standard called manifest v3. This is difficult to fix, and the core program itself does not work, so I am currently looking for the reason why it does not work. The Chrome version is compatible with manifest v3 and works despite some problems, but Firefox does not work at all with the same code, so I am currently looking into what the problem is. Please wait a little longer. Sorry.