Download failure

I’ve found myself in hospital unexpectedly. Thought I might catch up on some TV and movies from my Plex Media Server. Tried streaming… it worked, intermittently but not watchable - that’s fine, that’s down to the hospital’s wifi. Chose some stuff to download and watch later and instead watched it repeatedly fail… some of the downloads would progress to maybe 50% then next time I looked they were all back to zero…

Tried for several hours, going down to a single item in the download queue - still failed. Switched to using Synology’s DS File app to download directly from my NAS - worked flawlessly.

This is the first time I feel let down by Plex.

I forgot to add… does anyone know how to resolve this?