If turning the phone off and on doesnt work the only other think you can do software wise is to master reset the phone.
you can do that buy
1. press and hold the Power, Volume Up and Home button on your Galaxy S6 Edge (press the keys simultaneously).
2. Release the buttons when the recovery mode menu will be displayed on your device.
3. You can navigate within recovery by using Volume Up / Down and Power buttons.
Good Luck