# FAQs & Troubleshooting

### Overview

This page links to all FAQ and troubleshooting articles for quick access.\
Choose a category below to explore its questions and answers.

### Categories

* [Authentication FAQs](https://developers.bead.xyz/faqs-and-troubleshooting/authentication-faqs)\
  Token lifetimes, refresh flow, key rotation.
* [Payments FAQs](https://developers.bead.xyz/faqs-and-troubleshooting/payments-faqs)\
  Klarna testing, crypto tender quirks, payment-status meanings.
* [Webhooks & Error Codes](https://developers.bead.xyz/faqs-and-troubleshooting/webhooks-and-error-codes)\
  Signature validation, retry logic, error-code lookup.
* [Environment & Testing](https://developers.bead.xyz/faqs-and-troubleshooting/environment-and-testing)\
  Sandbox limits, test wallets, sample data.