+44 3330428525 (UK), 1-(864)-302-0260 (U.S.) How to Contact Ethereum Support by Email & Wallet Recovery Customer Service +44 3330428525 (UK), 1-(864)-302-0260 (U.S.) Ethereum is one of the most widely used blockchain platforms in the world. With thousands of decentralized applications (dApps), tokens, and users relying on Ethereum’s infrastructure daily, it’s no surprise that questions or issues occasionally arise.