overcastfm, If you can't download shows on the TWiT network since yesterday, it may be due to an ad-blocking VPN, DNS, or router, such as Eero Plus.
To temporarily alleviate the problem, disable those ad-blocking features, or add this to your allow-list if you have such functionality: twit.cachefly.net
(Ad/tracking-blockers completely break on podcast downloads. Podcast ads don't work the same way as scripts on web pages, and can't be blocked without blocking the audio downloads completely.)