Unexpected Adobe Reader asks for ID confirmation on start up

Hello

I'm wondering if this is genuine or not?   This morning when I started my computer a Pop up saying it was from Adobe asked me to confirm the last four digits of my phone number (a number I no longer have access to) When I confirmed my old number (as that is all I thought it wanted) it  said it had sent a code to that number, as I've no access to that number I chose to confirm via e-mail. So it sent code to my e-mail. After entering the code sent to my e-mail it asked for my Adobe password.   I started getting suspicious and so I didn't enter my password and tried to close the pop up confirmation box but it keeps popping up all the time. I cannot get rid of it even after restart. Is this genuine or not?  And why did that pop up have Emily (and a surname) half obscured at the bottom and now I've restarted it says Lincoln and next to that I can just make out the surname this time which is  Bradley ?