Why in heavens name I can't shut down screen overlay in my sanzum galaxy 6s edge plus. ???

[AC Question]

Non of my apps are working properly. Do to a new Super annoying message that say I have to shut down screen overlay, I try everything but there is not I repeat there is not anecessary option to shut this down, if I have to errace and initiate my phone do to ANDROID miss half. I will change to Apple or Windows again, come on !! This is an insult to the users. Send a patch or send a message that fix this. We are making you big Sansung and Android don't desert us now. !!