I am encountering an issue when trying to sign in to third-party apps using my Apple ID. Despite having already added my Apple ID in the settings, I receive a popup message stating, "You need to sign in with your Apple ID in settings."
Hey I had the same pop-up showing up and I found it's happening if you are signed in but you didn't activated iCloud for the account. I hope helps you!
I am encountering an issue when trying to sign in to third-party apps using my Apple ID. Despite having already added my Apple ID in the settings, I receive a popup message stating, "You need to sign in with your Apple ID in settings."