Guys i solved this problem. No needed root!
1. Push the button on settings tags Poweramp
2. Push the "Edit Tags" button.
3. This is important and interesting. There is writing no access bla bla bla on a window. It doesn't matter! There is a button on screen "Grant Access" on right side but not looking. Because all window white. Push the "Grant Access" button and wait.
4. Select "SD CARD" folder but only sd card folder. Not spesific file(music.my music or any folder)
5. It's done. You can change music tags or delete any music file.