If you're importing a podcast from PodOmatic, you'll need to contact their customer support to set up a feed redirect.
If you are a PodOmatic Pro customer, you may be able to contact them through your PodOmatic dashboard.
Otherwise, you can reach out at [email protected].
You'll want to have handy:
Your new Pinecast feed URL (you can find this on your podcast dashboard)
Your podcast name and existing RSS feed URL
The email address that you signed up for PodOmatic with