Screen cast

[AC Question]

I have a zte zmax pro from metro PCS..I also have a screen beam mini 2 that works with out wifi..I can cast YouTube and see my phone on the TV via casting... But when I cast Netflix.. I get the status bar and sound but no picture?...does any body know why? I am currently updated with marshmallow so my phone is updated... And I've tried uninstalling and reinstalling and everything along those lines..HELP!!!!