How to port pro license over to new mac from a mac pro

Just got a new (thankfully) lighter Mac Air. I am trying to get the same version I am running on my Mac Pro laptop to my new Air. The license will not add to
the new Air.

any error or information message?

download and install the right version appropriate to your license from the SU Product Downloads page. A license of SUP v2013/8/7/6 won’t work with recent SU v2014 and vice versa.