If you want to stop selling your paid post and remove it from recommendations while allowing those who already purchased it to retain access, follow these steps to mark it as "Not Relevant":
Navigate to the post you want to mark as "Not Relevant."
Click the three dots in the top right corner of the post.
Select "Not Relevant" from the dropdown menu.
A popup will appear, asking you to confirm the action. Note that this action cannot be undone.
After confirming, you can link a new relevant post at any time. You can either choose a relevant post from the list or add your own link.
You can decide whether to offer free access to users who bought the original post or require them to purchase the new post.
Once the post is marked as "Not Relevant," users who previously purchased it will be notified about the new relevant post. If you’ve provided free access, they can view the new post right away; otherwise, they will need to purchase it.