Seems like I've managed to crack the game (bypass Gumroad validation).
It's my first time trying something like that, so there may be some issues. This is the best I can do, it's a mess to look at obfuscated code and edit IL instructions.
If someone get the newer versions, I can try to crack when I have time.
APK:
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APK (v2 fixed):
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Codes:
erocondo-apr-may22 -> Unlock the game
eroDLC1
erocondo-DLC2 to
erocondo-DLC14-> DLCs
erocondo-DLC3 -> hearts
erocondo-DLC5 -> items
Edit: Some dlcs with variations on gumroad only unlock the first skin, I'm working on fixing that...
Edit2: Fixed. Took a lot more effort to do that than I would like...
If you already downloaded the previous version then update the app (do not uninstall or you will lose progress) then
re-enter the DLC codes for the skin fix to work.