trouble installing Second Computer

i have downloaded and instaled the avast pro from my free trail with no problem i have gone to my second computer and tried to instal the patch from the email u recieve and no luck gettin it off free trail. i have also tried to install the lisense from a flashdrive extracted//pulled from the 1st computer,

There is no patch to be applied… To get the free trial, just download from the official site.
The single license file works into one computer only.