Unable to Login to Instagram using a Facebook account

My Instagram account was created from Facebook, so it only has an FB login. I can login to the mobile and the website using these credentials. I

Direct Publishing Errors for Instagram Business & Personal profiles

Facebook or Instagram Restrictions? Try these resources! - Mrkt360

Unable to link Instagram (business) account to Facebook page - Web Applications Stack Exchange

unable to confirm instagram business account connection with my Facebook page(and vise versa) : r/Instagram

Cannot log in to Facebook Account - No way to contact support - Web Applications Stack Exchange

Facebook and Instagram not logging in - Apple Community

Anyone knows whats the problem? I can log in on PC but if I try App I get this error and can't log in with Facebook too.. : r/Instagram

Can't log in to Instagram with Facebook problem solved 2023

Instagram - login with facebook BUG. Help me please : r/brave_browser

Cannot connect to Instagram - Questions & Answers - Make Community

Instagram Expands Options for Users Locked Out of Their Accounts

Can you link two Instagram accounts to a Facebook business page? - Quora