Mrs. L.A. forgot her Yahoo password. I don’t know what’s wrong with her laptop, only ‘I can’t do anything on it.’ She has tried to recover her Yahoo password. She gets a verification code on her phone and can get logged in that way, but she can’t see anyplace to change the password. I tried. I put in her phone number and someone else’s face and name appeared. Weird. I tried it on her FireHD. When I entered her phone number, it showed her face and name. So I got the access code, logged in, and changed entered a new password. Great! I’m logged into her account! On the tablet. When I tried to log in on her laptop, it said the new password I’d just created was incorrect. 
Could it have something to do with Yahoo thinking she was somebody else when I entered her phone number from the laptop? Why would the same phone number work on the FireHD, and not on the laptop?
I could not try to log in on her work computer, because I don’t know the password to unlock it. (And she’s frustrated enough that she’ll get mad if I ask her now.)