I received this e-mail below a few days after I already filed with TurboTax. How do I claim my $15 discount since I claimed a Robinhood product and I already filed?

[DJVargas]

This is the e-mail I received...
"We’ve partnered with TurboTax to offer a $15 discount on TurboTax Premier federal products. When you visit TurboTax through Robinhood, you can get a $15 discount on tax filing services."

[ChondelLO]

For information on how to receive an affiliate partner discount, please visit the help article below. If you need further assistance, please Contact Customer Support.

How do I get my TurboTax affiliate partner discount? - Intuit

How do I contact TurboTax? - Intuit

[robtm · Accepted solution]

TT issues various promotions and discounts throughout the season for their products. Usually these have a start date and an ending date. If you file and pay before the start or end of the promotion, you can not get the discount. They are not retroactive.

[DJVargas]

Thanks! It's a shame that they send these types of discount e-mails so late in the month, instead of sending them early on when the tax season starts. I missed out on a &15 discount.