It's too late to file an extension. Just file your return as soon as you can. Change your date of birth under My Info. Did you enter your W2 wrong?
To check your W2 just type w2 (small W) in the search box at the top of your return and click on Jump To the W2
Federal on left
Wages & Income you should see your W2 listed at the top
Or scroll down to Wages and Salaries- Click the Start or Revisit button
You should get a box listing all your W2s.
Then click Edit by your W2 to double check it or change it
