downloaded plug-in does not show up in the plug-in manager
I downloaded the "Tunings and Temperaments" plug-in for 3.x (it was a bit difficult to find the file for download by lack of documentation, but finally I made it). the file's name is tuning.qml.
However although I put it it into the correct folder (C:\Users\Windows\Documents\MuseScore3\Plug-Ins)(windows 10) and restarted museScore, I can't see it in the plug-in manager!
I installed another plug-in which worked without any problems.
Thanks for help!