The amount of a transaction may be Cancelled or reversed to you (a “Chargeback”) if the transaction (a) is disputed by the sender, (b) is reversed for any reason, (c) was not authorized or we have reason to believe that the transaction was not authorized, or (d) is allegedly unlawful, suspicious, or in violation of the terms of this Agreement. You owe us and will immediately pay us the amount of any Chargeback and any associated fees, fines, or penalties assessed by our Processor, processing financial institutions, or MasterCard, Visa, American Express, Discover, and other payment card networks, associations, or companies (“Networks”). You agree to assist us when requested, at your expense, to investigate any of your transactions processed through the Service. For Cancellation associated with Cards, we will work with you to contest the Chargeback with the Network or issuing banks should you choose to contest the Chargeback. We will request necessary information from you to contest the Chargeback. Your failure to timely assist us in investigating a transaction, including without limitation providing necessary documentation within 5 business days of our request, may result in an irreversible Chargeback.