Lost movie purchases

So i go in to watch some of my movie purchases this morning on xfinity stream only to find out Star 80, Elvis, Modern Problems, The incredible shrinking woman , what dreams may come and american sniper are no longer there with the newer purchases and it says add + ?? I have put a lot and i mean a lot of money into these movies as they are a few of my favorites now i dont have them? Please help ! I am a diamond member and been a loyal customer.

Amanda