Sorry, but the 30 days is once per platform (PC, PS4, etc). I don't know where you bought it from but both the EU and NA stores say this on their store page of the complete editions:

The 30-day free play period included with purchase can only be applied once to each platform on a single service account. Moreover, this 30-day free play period is not applicable to platforms on which a license has already been registered.
Sorry!