Get your taxes done using TurboTax

We have same problem here with license code.
I’ve TurboTax Premier CD version installed on my Windows PC a month ago (March) with License Code enter, and everything works fine. Yesterday I finished my tax and efile them with this TurboTax Premier software on my PC, and I received email messages from IRS that my taxes have been accepted.
Today I open the Turbo Tax Premier on my PC to verify the taxes been accepted, then it comes up with this license code screen “Your Product is installed, let’s activate it”. I entered the same code again and it comes up with this error message: “All available activations for that code have been used. Error code: 603”.
What is going Turbo Tax???

Can you help please?