I already paid for Turbo tax on Amazon.com but when I go to efile, Turbo Tax asking me to pay $39.00 from on Federal return. What is that all about?

I purchased this from Amazon.com and did the download.  Why am I being asked to pay and additional $39.99?

TurboTax Deluxe Tax Software 2017 Fed + Efile + State PC Download [Amazon Exclusive]