> ## Documentation Index
> Fetch the complete documentation index at: https://docs.ycloud.com/llms.txt
> Use this file to discover all available pages before exploring further.

# Frequently Asked Questions

This page addresses common issues you may encounter while using YCloud and WhatsApp Business API products.

<Accordion title="YCloud Payment Methods">
  We support online WeChat and credit card top-ups; for offline corporate bank transfers, please contact your business manager for the payment account.
</Accordion>

<Accordion title="Embedded Sign-Up Related">
  If an error occurs in the embedded sign-up pop-up, we recommend consulting the [Embedded Sign-Up Error Documentation](https://developers.facebook.com/docs/whatsapp/embedded-signup/errors) to resolve the issue.

  Embedded sign-up error responses come directly from Facebook's servers, over which we have no control, and we do not have access to any support logs for this process.
</Accordion>

<Accordion title="Display Name Related">
  The display name should be related to the company or brand name you use for your WhatsApp Business API service. You can [click here for detailed naming rules](https://www.facebook.com/business/help/757569725593362). To modify it, open [WhatsApp Manager](https://business.facebook.com/wa/manage/phone-numbers/) and select the relevant business account and phone number.
</Accordion>

<Accordion title="Official Business Account (Green Badge Verification) Related">
  Please [click here](/en/documentation/whatsapp-business-platform/accounts-and-business-identity/official-business-accounts) for the verification guide.
</Accordion>

<Accordion title="WABA/Number Migration Related">
  Please [click here](/en/documentation/channels/whatsapp-accounts-management/business-accounts/number-migration) for details.
</Accordion>

<Accordion title="WhatsApp Business Messaging Policy Related">
  You can [click here](https://business.whatsapp.com/policy) to view WhatsApp messaging policies.
</Accordion>

<Accordion title="WhatsApp Template Message Review Related">
  Reviewed by Meta, the review process typically takes one business day.
</Accordion>


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