What did you download from Amazon? The 2018 or 2019 program? You dint need the 2018 program installed to do 2019. You only need the tax data file ending in .tax2018 on your computer to transfer into 2019.
What do you need?
Amazon article on how to download software,
http://www.amazon.com/gp/help/customer/display.html?nodeId=201380160
