Hello.
- Go to Settings
- APPS
- Touch the action button top left of your phone screen
- Touch Reset app preferences
- Reset Apps.
OR
- Go to Settings
- APPS
- Touch the action button top left of your phone screen
- Configure аррѕ
- Touch
- Click Draw Ovеr Othеr Apps.
You will then see a list of apps that uses Screen Overlay - Then turn screen overlay one by one.