Does that mean I have to rebuy the game despite paying for it on the old main page for itchio...?
Viewing post in [DLC 1] Orks Ryona BBC : Skins and Backgrounds comments
Nope, the owners of the game on itch (which bought the game before it was disabled) can freely download the updated v1.8 game (the download link only shows if the game was purchased previously). I will keep updating the itch version (even in it's locked state) as long as i will be allowed.
DLCs on the other hand must be bought separetly, also, they are crosscompatible with any variation of the game (in case someone got the game/dlc from itch or dlsite or saikey or any other source).
I hope this helps ^.-
~NK