You are going through more aggravation and spending more than necessary. With the CD/download there is no need to purchase a second copy if you want a higher version. All you need to do is upgrade the version you already have. With the Deluxe program open, just go to the top of the screen --- do you see the little bell at the top right?---then >> Click >> and choose "Upgrade" and you can upgrade from Deluxe to Premier and just pay the difference between the price for Deluxe and Premier.
Return or get a refund for the unnecessary copy of the software you purchased.
To request a refund from TT ; https://support.turbotax.intuit.com/forms/refund-request.jsp
Here's how to activate a different version. There is a way to have 2 licenses. You don't need to install the second version just enter the License Code. Under Help - Switch Product - Activate new product. Don't know what that will do or what benefit you will get. Don't think it will allow you to efile more than 5.
But you only needed to buy 1 version. The Desktop program can do unlimited returns and efile 5 for free. And All the Desktop programs have the same forms. You just get more help and guidance in the higher versions.