Hello, I had the exact same issue using a copy of TurboTax Home and Business 2020 that I downloaded from Amazon. I tried all of the recommended 4 Methods they cited to resolve the issue and none worked. I also consulted a PC Tech and he was unable to resolve the issue. I called [phone number removed] and after pressing 1 for TurboTax I said "Customer Service" in order to bypass the robot. I spoke with a TurboTax tech and she requested my "product number". There absolutely is no "product number" on the download from Amazon. All I could give here was my activation number. That didn't help. She consulted with her supervisor and finally gave me a new activation code that WORKED!!! I had to login to my Intuit account, but TurboTax was not listed on my products. The tech finally added it to my list of products with a download link that brought up the new activation code. I was so happy I literally cried! I hope this helps you with your issue.
