I have a Samsung Galaxy Android Tab A with Nougat 7.0. I am trying to connect my tablet to my Samsung Smart TV. I can share content but when I try screen mirroring the tv disappears from the list. I would like to be able to watch movies and other programs. I was able to do so when I had Marshmallow 6.0 and Directv with the Directv app, I no longer have Directv.