Hi ZebLongX 🤗, yes, the codes have been changing for a while now. Due to itch.io policies, the game can no longer be sold here.
You can get the code through Patreon, either with a one-time purchase or a subscription. It is also available through SubscribeStar with a subscription, and on the official Medieval Times website, also through a subscription.
If you have any other questions, feel free to ask.
Best regards!