I've tried it on iTunes and on gPodder. iTunes shows a blank page and gPodder says it couldn't be added.
I have an ongoing premium subscription.
OS X version: macOS Sierra
iTunes version: 126.96.36.199
Error returned by gPodder:
"Could not add some podcasts
Some podcasts could not be added to your list:
https://www.japanesepod101.com/premium_feed/custom_01_301989854:804782073:1040186879:805109375:3_CompleteAudio.xml: <unknown>:103:7: not well-formed (invalid token)"
iTunes just shows a blank page with the URL and no other content
Solutions tried (but didn't work):
- changing username to something more simple
- removing spaces
- changing the media types (only downloading audio, or downloading all audio, video, and PDF)
Right now, I'd like to properly set up this feed: