Download Video from Plex Server on Infuse Pro

I have infuse pro and I want to download a couple of movies on my infuse iOS app (I have infuse pro) but it always gives me an error when trying to download.
Is this a bug or is this something with Plex?

Are these items playable in Infuse?

Are you on the same local network as the Plex server, or is this a remote server?

Yes they are playable on Plex and Infuse.
These files are on a remote server, not local server.