After importing your Patreon podcast, and assigning your episode tiers, you will see a notification about an important final step: you need to enable Acast in your Patreon RSS Settings to deliver your feed to patrons.
This will ensure that:
Your existing members will have uninterrupted access to your episodes,
New members get easy access to your show on their app of choice
On the Patreon creator Page Settings, scroll to the bottom and make sure that "Enable Acast RSS audio feed" is checked. And then scroll all the way to the top and click "Save Changes".
That's all set! If you have completed these steps, then you can go ahead and dismiss the notification on your Acast page.