Difficulty Extending Premium Subscription to 2nd Mobile Dev

I subscribed to Avast Premium on my Galaxy S Duos, hoping to reestablish same on my main device, Galaxy S3.
So far, this hasn’t worked, as I repeatedly get errors “restoring of your subscription failed. try again in a few minutes”, and “Server errors”.
The S3 had only the Avast Anti-Theft installed, but following these difficulties, I have installed the full s/w. All installs from Google market, same google account.

Please help.

please try again there was a google validation server issue.