How do I get Guitar Pro discount please?

[Michael_K73]

Use promo code “Justinguitar” at checkout – it’s already 20% off – that will add more.

Guitar Pro discount link

Hi all I just got a email from Justin, nice news btw, and there’s a link for a discounted purchase of Guitar Pro. Unfortunately the link drives me to an empty cart. Is the offer geographically restricted ? Thanks for any tip you could have, Regards