Hello @IPMAHQ ,
No it isn't possible to login via Insta to connect the accounts, due to Facebook's API requirements.
Make sure the connected Insta account is a business page, not a creator page. They'll look similar but have different restrictions on API connections.
Beyond that, I'd recommend reaching out to Facebook/Insta's support to make sure the account is properly associated with your business page, that the Facebook login you're using is properly setup as an admin, etc.
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