I received an email for 25% off. I cleared my cache and cookies (erasing all my stored passwords in the process :( ) and it still doesn't work. How do I get the discount?

[TerukoL]

Some people are experiencing problems applying their discount code due to so many people being on the server right now. Open a new default browser and please follow the steps below exactly to have the discount applied before you complete payment. Also, make sure to redeem the promotional offer during the valid period: 

1. Log out of TurboTax.
2. Go to the promotional email in your email inbox
3. Click on the Sign In link in the email. Important: you MUST click on the link in the email in order to get the Federal Fee discount of 25%.
4. Sign in to the account that the email link provided
5. If you never started your return choose a TurboTax product that is right for you. Make sure not to navigate anywhere else then choose a product to continue. If you do you will lose the offer, please repeat steps 1 - 4 to reset the offer code.
6. If you are returning to finish your return click "Take me to my Return". Make sure not to navigate anywhere else, please only click "Take Me to My Return." If you navigate away from "Take Me to My Return" you will lose the offer. Please follow steps 1 - 4 if you navigate away from "Take me to my Return."
7. Once in your return click the File tab.
8. Click Start to review your order.
9. The discount will be applied to the federal portion of your return, the old price will be slashed out and the new one will be presented.
10. Complete the payment in TurboTax and file by the promotional date requirement.

[discount-]

This did not work. I tried this as these are the exact instructions copied and pasted from another question last year.

[GabiU]

Have you tried using a different default browser?

[discount-]

Yes. I also just spent 10 minutes on the phone with someone who basically just asked my name and phone number, typed for 10 minutes without speaking and then hung up on me with no warning. This service is utterly terrible.