cant use password to view passwords list in chrome

I am the admin of the computer. My son can't remember a password. I go into his settings and click on show password. It brings up a box with a useame that is incorrect. I put in my current password and it responds with useame or password is incorrect. The problem is with the useame. It can't be changed from the old name to the new name. I had forgotten my password in the past and did a reset to gain access. Please let my know recourse and how to respond to future issues. Windows 10 Chrome 51.0.2

Recent Questions...