Why can't I connect a Facebook Page to Instagram when I can manage the Page?

Being able to manage posts isn’t necessarily enough. Meta separates task access from Facebook access: task access can handle content and insights in tools like Business Suite, but it can’t switch into the Page or manage linked accounts. Have the Page owner check Page access and confirm your personal Facebook profile has Facebook access, then make sure you’re logged into that same profile when you connect Instagram. If the Page is inside a business portfolio, check its access there too. Once that’s sorted, retry the link from the Page or Instagram’s linked-accounts settings. If it still won’t connect, remove an old Instagram/Page link only if you’re sure it’s the wrong one—don’t unlink a live setup blindly.