I want to buy Logic Pro X and share it with my family. However, on my M1 Air I bought Menubar Stats and when I go into the App Store on my wife's Macbook Pro 17 it shows as '£4.99' and then when I click the button it shows 'Buy'. I'd expect it to say 'Get'. Is this some restriction between M1 and Intel apps or have I not got family sharing set up right?