S7 can't mirror phone screen on mirascreen, only gallery and video player

[Android Central Question]

My s7 is unable to screen mirror the phone onto my tv through my mirascreen dongle as it can't find it. However, when i am in videoplayer or photo, it can screen mirror onto the mirascreen. My issue is whenever i change picture, it will dc then reconnect. The screen will not rotate too when i rotate my phone. Please advise.