Don't know why, but the script's button doesn't appear

[iG8R]

Hi.
Just found this script and decided to try it at once.
But I can't find its button on the toolbar, although another script (the script button for restarting Firefox in the screenshot) works fine.
Is there a way to find out why this happened and to fix it?

My system:

• OS: Microsoft Windows [Version 10.0.19045.2673] 64bit
• Browser: Firefox 120.0 64bit
• userChrome.js: https://github.com/alice0775/userChrome.js
• RestartFirefoxButton_Movable.uc.js: RestartFirefoxButton_Movable.uc.zip

[garywill]

Hi~!
Sorry but I can only make sure the script work on Firefox 115 ESR currently.
I don't have time to update script for every firefox update.

You can open the browser console to see the error log.
Maybe you can try to fix it yourself. Or ask for Alice's and other people's help. People who have the time will be happy to help

[iG8R]

Thanks for the quick reply.
The console doesn't contain any errors, unfortunately.
OK. I'll try to experiment with other userChrome.js files.