Question: iTunes on iPhone asking for Code
I am new iPhone user. Any time when I open iTunes on my iPhone my phone inform me that somebody in location near me is trying to use my account. Code, 6 digits, arise on the screen. I am informed to put this code somewhere to confirm security. For information I have PC with Win8.1 with iTunes for sync.
How can I and where can I input that 6 digit code?
My daughter has the same iPhone synced with MacBook Air and she has not problem like I have.
What can i do?
iPhone SE, iOS 11.0.3