Volume level doesn't work 115.4.0esr(x64) Win10

Extension suddenly lost to show the icon in toolbar. Other than that, it's working.

Simple, the pop-up is a little big to my taste but very functionnal. The preferences/tree style menu doesn't appear on my version of firefox (102.2.0esr (64 bits)) which limits the add-on use.

A great project in that gets updates often. A project that I hope is never dropped.