I just got an email promising a deep discount if I file before March 26th but it is not showing up on this account?

The 25% off is limited to Turbotaxlive.  Click on the link in the email and then scroll down to the turbotaxlive link.  It will show a 25% discount from $119.99 to $89.99.  Click on the link that says Get 25% off.  You have to purchase Turbotaxlive.