Download netflix contect to drive, and watch on android?

Im having some difficulty with a new sandisk wireless stick, in that every file manager i have used on android does nto see the stick, the only thing that works is a somewhat clunky sandisk app.

 Also, i was hoping to be able to download netflix content onto the stick ( via the official netflix app) as opposed to my internal device memory, but this function does not appear to work.

how can this be fixed?

Another question, how do you stop the app form crashing, sandisk connect drive has stopped working over and over again?