# Account

- [Billing](/help-desk/account/billing.md): Paying for the WhatsApp API and Managing your Subscriptions
- [Add Business Info to Invoice](/help-desk/account/add-business-info-to-invoice.md): How to Set Up Business Information for Invoicing
- [Setting "Auto Download"](/help-desk/account/setting-auto-download.md): What is Auto Download and how does it work? How to Get a Full-Size Picture in the Response?
- [Customizable Webhook Headers](/help-desk/account/customizable-webhook-headers.md): Custom callback headers. Now you will be able to add any custom header and token to increase security
- [How to find out the IP channel](/help-desk/account/how-to-find-out-the-ip-channel.md): How to get the IP of your Whapi channel
- [How to Delete a Channel](/help-desk/account/how-to-delete-a-channel.md): A Whapi Channel (instance) is a connection with a phone number that has a WhatsApp account, which will be responsible for sending and receiving messages