Download error, waiting for connection

Hi, I am trying to download a video from this page https://nyafilmer2.com/sommaren-med-slakten/season-01-episode-03/ on my iPad and I always get the same error. When I click on the video to play it and than on the download symbol I get the error: Download error. When I go to the downloads it says waiting for connection but I am connected to the WiFi. I tried this with several videos from this page but always the same error. On my iPhone the download works perfectly without any issues from the same page.