Server downloads failing for Patreon feeds.

[rbn920]

I have a couple of paid subscriptions to podcasts via Patreon. They stream fine, local downloads work, but server downloads silently fail on the iOS app. Nothing in the docker logs but the web interface generates a notification with Internal server error: Server returned error: 403 Forbidden

[rudism]

#802 may address this issue (I didn't encounter it on Patreon feeds, but it fixed identical behavior for a different premium/paid feed).