I have had my S7 edge for a couple weeks now and have not been using a screen protector mainly because I couldn't decide on one after looking at so many reviews. No problems so far and the look of the screen is amazing! I don't want to cover it up!
Re: Odd "screen overlay" pop up shows up often with some apps, what is it and how to properly select
This is driving me nuts, too! I am pretty sure it was Twilight that was causing the issue on my S7. I haven't had the pop up in several days now since disabling it.