"reset app preferences" now can't load music from

Ta Fed

I did "reset app preferences" on android system for privacy reasons, but not
because of music speed changer app, anyways, i cant load audio files from system at all, even i tried enabling all of the app permissions, what should i do?

Support

Restart your device. If that doesn't reset things, something may be corrupt with your install. Try to un and reinstall the app to reset all settings and restore files. Export any playlists firsts. Then get a fresh copy on Google Play: https://play.google.com/store/apps/details?id=com.smp.musicspeed

Then, if you still have issues, contact support@musicspeedchanger.com with more details.