Help Center
How can we help you today?
Find quick answers, explore guides, and get the support you need to build and scale with B21.
/ to focus • Popular:
Integrations, API Keys, Disputes
Browse Categories
Curated topics to help you move faster
Getting Started
Account setup, onboarding, and first steps.
Explore
Account & Security
2FA, roles, permissions, and compliance.
Explore
Payments
Settlements, refunds, chargebacks & disputes.
Explore
Integrations
E‑commerce, CMS, POS, and third‑party tools.
Explore
Developers
API keys, webhooks, SDKs, and sandbox.
Explore
Compliance
KYC, AML, PCI DSS and data protection.
Explore
Top FAQs
Quick answers to common questions
Navigate to Developers > API Keys in your dashboard. Use restricted keys for client apps and rotate keys regularly.
Common reasons include insufficient funds, issuer restrictions, or fraud rules. Check the payment details page for decline codes.
Go to Account Settings > Security and enable Authenticator App or SMS. Backup recovery codes in a secure location.
Yes. We retry with exponential backoff up to 72 hours. Ensure your endpoint returns 2xx and verify signatures.
Reports > Settlements in your dashboard. Export CSV or integrate with our Reporting API for automation.
Use the contact options below or open a ticket from your dashboard. Priority support is available on Business plans.
Need more help?
Our support team is here 24/7. Reach out and we will get back within minutes.
Looking for developer docs? Visit Developers