I have a hard drive contected to the router. When I access the drive via my TV, it doesn't show the video files stored on there and only the pictures. I didn't have this issue with my previous router on the same TV. When I check the hard drive the files are all there. How do I fix this so I can access those videos. 

Also is there a way the Hard drive can always remain active. Sometimes it doesn't appear. Finally can I access the files within the TP link app, for example if I wanted to see them on my phone or laptop.

Thanks