uable to use German ARD Mediathek error "NDR Mediathek is missing"

I have been trying to is the media player from an local television via the use of the notebook but , I think that video they provided so I have been having the main  screen of the ARD mediathek so I think that it is the problem that might be a problem that is highlighted so far the “NDR MEdiathek that was later included in this .