Support can't answer that quickly, and it was the weekend. If it takes much longer, please read the rules of this category, they tell you what to do.
Thank you for your reply.
I would like to explain that I have already sent two emails to Itch.io Support (support@itch.io) about three days ago, however, I am sorry that I have not received any response until now.
I have read in some community posts that "Itch.io may only allow refunds within 7 days of purchase". I am not sure whether this is accurate, but I am quite concerned about the refund eligibility due to the relatively large amount I paid.
I hope you understand my concern and sincerely appreciate your assistance.
Best regards
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The key for customer support reference: [deleted]
I have sent two e-mails, and the Ticket IDs are : 279793, 279789.

Thank you very much for your help.
I would like to explain that it has now been 6 days since I first sent emails Itch Support (support@itch.io) regarding my refund request. Yet, I have not received any response or update so far.
I'm not sure if there is a strict “7-day refund window” policy, but I’m concerned that I may miss the chance to receive a refund due to the delay.
Could you please let me know approximately when I can expect the refund to be processed?
Thank you again for your time and understanding.
Best regards.
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The key for customer support reference: [deleted]
I have sent two e-mails, and the Ticket IDs are : 279793, 279789.