> For the complete documentation index, see [llms.txt](https://docs.emudhradigital.com/llms.txt). Markdown versions of documentation pages are available by appending `.md` to page URLs; this page is available as [Markdown](https://docs.emudhradigital.com/help-center/help-center.md).

# Help Center

Find answers about eMudhra eSign, Remote Key Storage, Remote Signing and the Signature Validation Tool — from common signer questions to plans, account administration and gateway customisation.

<table data-view="cards"><thead><tr><th></th><th></th><th data-hidden data-card-target data-type="content-ref"></th></tr></thead><tbody><tr><td><strong>FAQs</strong></td><td>eSign basics, signing and authentication issues, certificates and validation, integration questions.</td><td><a href="/help-center/faqs/esign-basics.md">eSign Basics</a></td></tr><tr><td><strong>Plans and Billing</strong></td><td>eSign v2 transaction plans, eSign v3 transaction and user plans, Remote Signing and DSC, invoices.</td><td><a href="/help-center/plans-and-billing/esign-plans-overview.md">eSign Plans Overview</a></td></tr><tr><td><strong>Admin — Manage your account</strong></td><td>Administration portals for eSign and Remote Signing, users and roles, license management.</td><td><a href="/help-center/admin-manage-your-account/manage-your-account.md">Manage Your Account</a></td></tr><tr><td><strong>Integrations</strong></td><td>Brand the eSign gateway pages with your logo, colours and CDN-hosted CSS — within UIDAI and CCA rules.</td><td><a href="/help-center/integrations/gateway-branding-and-customisation.md">Gateway Branding and Customisation</a></td></tr></tbody></table>

## Popular articles

* [Why didn't I receive the Aadhaar OTP?](/help-center/faqs/signing-and-authentication.md)
* [Why does Adobe show "validity unknown" for my signed PDF?](/help-center/faqs/certificates-and-validation.md)
* [Which documents are accepted for eSign v3 KYC?](https://emudhra-documents.gitbook.io/esign-and-signing-services/documentation/esign-v3-ca-ekyc-account/kyc-types-and-acceptable-documents)
* [How are eSign v2 and eSign v3 billed?](/help-center/plans-and-billing/esign-plans-overview.md)
* [How do I download transaction reports?](/help-center/admin-manage-your-account/esign-administration-portal.md)

## More resources

* [Documentation](https://emudhra-documents.gitbook.io/esign-and-signing-services/documentation/) — product guides, architecture and integration models
* [API Reference](https://emudhra-documents.gitbook.io/esign-and-signing-services/api-reference/) — request and response specifications

## Contact support

Raise a ticket with eMudhra support with your `aspId`, `txn`, `resCode` and timestamp for faster resolution.

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**Review before publishing:** add the support email, phone and ticket portal URL.
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