Hi, thank you for paying for the old version, (https://quidev.itch.io/naylas-castle-old) but that version was free or "pay what you want".
That old version is actually a demo, and it was also in a hentai-dev-support bundle. So that's why I had to separate the full new version from the old one, I'm affraid.
This version has more enemies, bosses and stages than the old one, also it will receive a new update soon.
Thank you for your support, means a lot!