An ETC payment refers to a payment made using Ethereum Classic (ETC). Ethereum Classic is a decentralized cryptocurrency and blockchain platform that is similar to Ethereum but has some key differences in terms of its consensus mechanism and overall design. ETC payments can be made to anyone with an ETC wallet address, and can be used for a variety of purposes, including online purchases, remittances, and peer-to-peer transactions. To receive ETC payments in Plisio, you will need to have a Plisio account with an ETC wallet address that you can share with the sender.