Almost every Instagram connection problem comes down to two things: your Instagram isn't a professional account, or it isn't linked to a Facebook Page you have full control of. Work through the checks below, then try connecting again.
1. Switch to a professional account
Open Instagram and go to your settings.
Scroll to "Account type and tools".
Tap "Switch to Professional Account" and choose Creator or Business. Either works.
2. Link Instagram to a Facebook Page
On your Instagram profile, tap "Edit profile".
Tap "Page".
Connect an existing Facebook Page, or create a new one.
3. Check you have full control of the Page
You need full control of the Facebook Page linked to your Instagram. If someone else manages it, ask them to give you full control.
4. Remove old connections and reconnect
In Facebook, go to Settings & privacy > Settings > Business integrations.
Find The Cirqle (and Scuare, if it's listed) and remove it.
In The Cirqle, go to Settings > "Social Accounts" and click "Disconnect" next to Instagram.
Click "Connect" and keep every permission switched on.
What the error messages mean
"Permissions required": a permission was switched off. Reconnect and leave them all on.
"No Instagram business account connected to this page": the Page you picked isn't linked to your Instagram. Do step 2, then reconnect.
"Missing permissions": you don't have full control of the Facebook Page. See step 3.
"Can't access Instagram profile": your profile may be private or not linked to a Page, or you don't have full access to the Page. Go through steps 1 to 3.
Connection dropped?
If you see "There are connection issues with your Instagram account", click "Reconnect" next to Instagram on the "Social Accounts" page. While it's disconnected, your campaign posts aren't picked up automatically.
Want the steps with pictures? Click "Connection help" next to Instagram on the "Social Accounts" page.