Bought another turbo tax program for this year. How do I add it to my account to view online on my tablet

Not sure what you are trying to do.  When you say you "bought another turbotax program"------what do you mean?  You cannot use the CD/download on a tablet or any sort of mobile device, nor can you look at the return you are preparing using that software on a mobile device.  The data is only on your own hard drive.

Please explain more.  Did you buy the Desktop CD/Download program?  It can not be used on a Tablet.  The Desktop program can only be installed on a full Windows or Mac computer, not a iPad or mobile device.

You can't apply the Desktop CD/Download purchase to Online. You have to pay for Online separately. You will have to get a refund for the Desktop program. Then you can use the Online web version. Or try to upgrade your computer or find another computer to install it on. The CD has both Windows and Mac programs on it.