Hello, if your purchase isn't too far back, I think itch.io support can help you. Just contact support@itch.io and ask for a refund. They might ask me for a confirmation later on, and I'll approve of it when they do.
okay thank you very much!
Please wait until support gets back to you. It shouldn`t take that long.
Refund is handled by itch.io support. Please send another e-mail to the support mail. I can't do anything here.