This could be due to one of the following reasons:
- You connected the wrong Instagram account. If you connected a wrong Instagram account, such as your personal account, follow the steps here.
- Your Instagram account doesn't have any posts or you are trying to show posts that don't exist.
- All your posts have copyright restrictions that prevent Instagram from sharing them outside their platform (for example unauthorized use of songs). Posts with copyrighted music often still appear as still images in your feed. You can read more here.
- All your posts are collab posts not authored by your account. You can read more about it here.