Thank you very much!!! It helped and now it works great
Sorting option menu in Flyme 6 system of Meizu isn't exist. I have the same Poweramp version on Android 7 (Samsung Note 5) and I can change sorting of song list by the 3 dots menu on the right bottom of the app window, inside the menu the first sub menu item is "List Options" (Sorting Type). This 3 dots' menu is vanished in Flyme 6 system. How do I solve this problem? PLEASE help me!!!