Why does it say I am 55 years old and I am not?

Question

And how can I change that?

Answer 1

I would guess that you put in a random birthdate, specifically birth year, when you signed up for your account...maybe?  See if there's a way to edit your account or personal info

Answer 2

Go up top to where it says my account.  Look for profile. Make any changes wanted on that page.  If not there then to the corner right where it says help.