> For the complete documentation index, see [llms.txt](https://developer.tokeninc.com/token-developer-portal-1/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://developer.tokeninc.com/token-developer-portal-1/payment-service/certificate-and-support.md).

# Certificate & Support

- [Frequently Asked Questions (FAQ) and Known Issues](https://developer.tokeninc.com/token-developer-portal-1/payment-service/certificate-and-support/frequently-asked-questions-faq-and-known-issues.md): You can find frequently asked questions and commonly encountered errors in this section.
- [Device Certificates](https://developer.tokeninc.com/token-developer-portal-1/payment-service/certificate-and-support/device-certificates.md)