This may happen if someone has used your phone to log into Instagram and then linked their Facebook and Instagram accounts.
To relink your Instagram account with your Facebook account:
Tap
or your profile picture in the bottom right to go to your profile.
Tap
in the top right, then tap
Settings.
- At the bottom, tap Accounts Center.
- Tap Accounts.
- If the wrong account is appearing, tap Remove next to the account you want to remove from Accounts Center.
You can also remove an Instagram account from your Facebook account by going to your Facebook account settings:
- Visit Facebook's app settings to revoke access to Instagram, which will unlink the wrong Facebook account.
- Just tap the Facebook icon again and enter your login information to link the correct account.