I have a license code and am at checkout. Where do I put in the code? I have tried in the service code box but doesnt accept

[VolvoGirl]

Are you in the Online version?  The License Code is only for the Desktop Download program that you install on your computer.  You can't apply the Desktop purchase to the Online version.

If you have a License Code, you need to install the program on your computer and can move your online return to the Desktop program. You can continue your return in the Desktop program without paying for Online.

How to switch…….
https://ttlc.intuit.com/community/choosing-a-product/help/how-do-i-switch-from-turbotax-online-to-th...

Do you need help installing the Desktop program? How to get started with the Desktop program, install and activate it
https://ttlc.intuit.com/turbotax-support/en-us/help-article/product-delivery/download-software-turbo...

[xmasbaby0]

We see people get confused and they keep logging in to online software which will require them to pay at the end.   You need to use the desktop software.   One way to tell if you are using the right software---your tool bar.   Online software has the toolbar in a black vertical column on the left side of the screen.   Desktop software has the tools up on the top of your TT screen.

You appear to be posting from online software instead of the desktop CD/download software that the license code is for.  If you are using online, you are using the wrong program.  You need to switch to the desktop software to get what you paid for.  You have to download it, update it and open it up from your own hard drive to use it.  

https://ttlc.intuit.com/community/choosing-a-product/help/how-do-i-switch-from-turbotax-online-to-th...