How can I claim my discount? I filed on another device

No one in the user forum can resolve a billing issue.  If you have a question about your TurboTax fees or billing, make sure you use the word “billing” in your request for help.  Do not use the word “refund.”

https://ttlc.intuit.com/turbotax-support/en-us/help-article/account-management/turbotax-phone-number.. 

Customer support is available from 5 a.m. to 9 p.m. Pacific time daily

Which discount? If you have a discount from your bank or somewhere you have to log in each time from their website.  How to get the Partner discount

https://ttlc.intuit.com/community/charges-and-fees/help/how-do-i-get-my-turbotax-affiliate-partner-discount/00/26509

Or do you have a $10 rebate for buying the Desktop program from Costco or Sam’s?