How do I resolve a problem with Venmo? ((Instant Issue Resolve)) To resolve a venmo issue, check the venmo Help 1（858） ー 241 ー 8160 Center, update the app, verify your payment details, or contact venmo Support via the app or website. For security concerns, report unauthorized transactions 1（858） ー 241 ー 8160 immediately. Your bank may also assist if needed.