On the download page, after you click the download button.
Viewing post in Pony Waifu Sim - Itch.io Launch! comments
Yes, thank you for notifying us. We have contacted Itch support to ask why our game was de-indexed.
It is odd, as we received no notification or explanation for this action.
If we were to presume, it is likely because we updated the game with a patch or are selling access to a code for the secret scene.