Recovery from a trial version

I was able to back-up my hard drive with a trial version True Image 2015 before my hard drive completely died. I was also able to create a boot drive using a USB drive. When I try to clone or restore to the new hard drive, it tells me this feature is not available with the trial version. Since I do not have an operating system, how can I get the purchased True Image 2015 software license on my computer so I can restore the back-ups I made using the trial version?