Facebook sign-in tips

When the Facebook window opens, use the account that administers your Facebook Page linked to Instagram. If you need to switch accounts or adjust which Pages and Instagram profiles are shared, use Edit Settings on the Facebook permissions screen.

1. Log in with the correct Facebook profile.
2. Review requested permissions and pages.
3. Complete the flow, then return to the signup tab.

Full product steps for linking Instagram to a Page are in How to connect Instagram.