Were you able to learn anything about the issue? I was told it's possible to add the game to your library without actually purchasing it. Perhaps your payment didn't go through? I'd still recommend contacting itch support!
I contacted itch support yesterday, and I am currently waiting for a response. I have also double-checked to confirm that I have indeed made the payment.
If they haven't responded yet -- can you email me at eromancergames@gmail.com with the email address you used to make the purchase? I can check it against my records to see if it went through and send you a download link another way. Sorry about the inconvenience :(
