How do I stop screen overlay for Instagram?

[AC Question]

I just recently got a new samsung s7, and after I downloaded Instagram, I tried posting a new photo. When the pop up came up to let it have access to photos and such, another prompt pops up that there is a screen overlay issue. I checked developer options and made sure everything was checked off, and it still pops up when I try to upload a photo. This has only happened with Instagram so far so I don't know if the problem is with the app or some other issue on the phone.

 

[Waffles0623]

Do you have any background apps that may be using important functions like camera (camera app, Pokémon go, snapchat)?