Background articles, symptom-by-symptom troubleshooting, and policy details. For step-by-step product walkthroughs, head to Guides. For API reference, see Docs.
Background articles that explain how things work.
Symptom → cause → fix for the most common issues.
Refunds, disputes, fees, retention, and the rules behind them.
Cross-cutting tasks like team, funding bank, and legal name changes.
Soft vs hard declines, issuer vs gateway, and what each implies for retries.
Plain-English overview of Visa and Mastercard stored-credential rules.
R01 through R85 with what they mean and how to respond.
Confirmation requirements for USDC and USDT on Ethereum, Polygon, and Solana.
A symptom-by-symptom guide to webhooks that never arrive.
"Do Not Honor" — what it means and what to do next.