Panic over
 

Decided to buy the Skylum 4 bundle which includes Aurora HDR, sky replacements, style looks Etc, (it is on offer for £85 off at the moment), having down loaded it, nothing would install.
I have spent 4 hours trying and after going on Skylums forums I found alternative instalation codes that worked, the annoying thing is it seems the problem has existed for months and nothing has been done about it.
So if you do get any of the Skylum products and the installation codes on the E-mail don't work, go to the forums and get the alternative ones.
Charles.