You can request a refund online through the Tickets section of your AMC Stubs account or your confirmation email. Once the refund has been initiated, you will receive an email from BitPay asking you to authorize the refund back to your cryptocurrency wallet. Processing time varies by the cryptocurrency used and may delay the email from BitPay, but you should receive it within 2 days. You can find more information about how to collect the refund from BitPay here.