Yes, I understand that. My question is can I use my previous purchase of the game on iPAD to now get the discount for P&S Campaigns on PC. I want to download it and play on PC.

Hi, I bought P&S on iPAD and tried to buy campaigns via the Slitherine website using the Apple iTunes receipt numbers. None of these were recognised by Slitherine. Does the discount for upgrading to P&S campaigns apply if you are shifting platforms e.g. from IiPAD to PC? If so what number do...