All the creator had to do was be clear that it wouldn't pay for the full version. Instead they explicitly called it the full version and then made an even more full version that costs more money.
Please reach me out on Discord (@horubrain) and I'll be glad to provide an additional download key :)
Contact them on Discord, they're working on fixing it.
I've added a section on this page about the "deluxe" version, please check it.
