Hello @CustomerS856 ,
The Instagram business profile needs to be linked with the FB business page you're an admin of. Otherwise we will not be granted the permission, per FB/Insta's API restrictions, to connect the pages to your CTCT account. I'd recommend going through this article that covers connecting an Insta business profile to a FB business page. If you need further guidance on connecting the pages/profiles, I'd recommend reaching out to Instagram and/or Facebook's support.