I see your feed is with Anchor. They may have submitted it on your behalf, under their own Apple ID: if they have done this then obviously you won't be able to submit it again.
Try searching on the title in Apple Podcasts. However if it was submitted only recently it probably wouldn't appear in the Search. You should contact Anchor and ask whether they have submitted it. If they have done this you wil be able to update it simply by adding episodes to the feed but you will not be able to access it in Podcasts Connect.