New episodes can take up to 24 hours to appear on listening platforms but it varies from platform to platform. We recommend scheduling your episodes to release in the early morning hours to account for this lag.
If your episode is appearing on other listening platforms but not Spotify then that means everything is good on ART19's side, your feed is working as expected and you shouldn't need to do anything else. It's more than likely just a matter of Spotify's feed content being refreshed. We do not recommend publishing a new version or removing the episode off of the feed as that could disrupt other platforms where the episode is already available.
This should resolve itself in time but if you need additional support we are happy to shed more light on the issue or support you in troubleshooting. If your episode is still not published after 24 hours we recommend to reach out to Spotify directly through the Spotify For Podcasters portal - and let them know your issue.