Man first thing is see if you can lose the "Windows Store" version, which isn't friendly with third-party plugins that require creating new directories, etc. and you can't even apply manual application updates. That is due to Windows 10 permission restrictions, not the app itself. I heartily recommend the Portable version which can be updated, backed-up, and examined/modified at your call. I'm not dissing the fact that Steven supplied a Windows Store version, it serves basic users nicely and provides an avenue to MusicBee that many would not/could not have taken otherwise. It's just not ideal for users who want to fully wring out its possibilities.
The Spectrogram rocks. Don't give up on it. But do try what I suggested.