Coinbase Help Center: https://help.coinbase.com
Coinbase Support on X: https://x.com/coinbasesupport
Coinbase Support email: support@coinbase.com
Coinbase app support: Open the app and go to Help or Contact Us
Coinbase phone support: Use the phone number listed in your Coinbase account or Help Center, if available in your region
Coinbase postal mail: Coinbase, Inc., 1 Market St., Ste. 200, San Francisco, CA 94105, USA