For your privacy, itch.io doesn't let me view transaction numbers, only the email associated with the purchase (and your email is not associated with any purchase)
If you would like further help from me, you need to contact me privately. I can't help you more without identifying information, and this is a public forum. Please go to https://itch.io/support and select "email the developer" to get in touch with me, or contact itch.io for help with the payment.