Since yesterday, whenever I try to upload a picture when I use an app (Facebook, Instagram, etc.), I get an error message telling me that I need to turn off the screen overlay. I even got the same message when I tried listening to music on Amazon Music, and even when I tried using "Clean Master!" I tried going to the settings tab the phone directed me to, but for the life of me, I cannot find the "Screen Overlay" tab or option to turn it off!!! Will someone please help me? This is driving me nuts!!!