Missing License code

I purchased Turbo Tax 2025  from Costco. I entered the license code and downloaded both the Federal and State programs, entered my data and submitted my returns to both through Intuit. I have received the Federal refund. 

Today I tried to open the Turbo tax program and was directed to the activation screen. When I type in the License code, I get an error message that the code is already being used and am directed to the login screen. When I try to login, I am directed to the activation screen. This loop is forever.

I contacted Turbo tax and spent 45 minutes with them . They claim that they cannot find the license code in their system. However I used the code and submitted the returns. My account verifies that I downloaded the 2025 State program. I could not do this without downloading the fed program first. This is obviously a coding error or glitch on their part  Their only comment was that I should go back to Costco and get a refund. Costco has a no refund policy.

Anybody have any suggestions for a next step? I would like to have the return incase I need to amend the return.