david.b.taylor@me.com

Hi, I have purchased Affinity Photo from the App Store, and downloaded it onto my iMac. I would also like to use it on my laptop, but when I go to the App Store on my laptop I am being invited to buy it again, rather than just download it. I am using the same App Store ID on both computers. Can someone help me overcome this? I believe that I am supposed to be able to use the software on more than one computer. Many thanks.