Activation lock
So I am helping my mother with a MacBook Air and I am unsure what she did. I have it now and it is stuck on the Activation Lock Screen. She does not remember her password but does have her Apple ID. I go through the recovery for the password and I get the code from her phone and place it into the computer and loops me back to this screen with red lettering. What am I doing wrong and how do I move forward from this loop.