Please reach out to support@art19.com to request your third-party prefix URLs be applied to your series. When reaching out to ART19 please provide the following information:
1) Series name
2) Prefix URL(s)
Note: ART19 supports up to 3 prefix URLs being applied to one series at once, but in the event you need more than 3 prefix URLs added please reach out to support@art19.com with all of your prefix URLs, and we'll figure out the best solution for you.
Note: Adding or changing the prefix URL can cause all listeners who have downloaded your episodes on Spotify to re-download the episodes causing an analytics spike. We have alerted Spotify of this behavior.