# Billing

- [Subscriptions](https://docs.appmysite.com/billing/subscriptions.md)
- [Subscription fee](https://docs.appmysite.com/billing/subscriptions/subscription-fee.md)
- [Upgrade subscription](https://docs.appmysite.com/billing/subscriptions/upgrade-subscription.md)
- [Downgrade subscription](https://docs.appmysite.com/billing/subscriptions/downgrade-subscription.md)
- [Change subscription](https://docs.appmysite.com/billing/subscriptions/change-subscription.md)
- [Prorated credits](https://docs.appmysite.com/billing/subscriptions/prorated-credits.md)
- [Invoices](https://docs.appmysite.com/billing/invoices.md)
- [Find invoices](https://docs.appmysite.com/billing/invoices/find-invoices.md)
- [Invoice details issue](https://docs.appmysite.com/billing/invoices/invoice-details-issue.md)
- [Billing details](https://docs.appmysite.com/billing/billing-details.md)
- [Change billing details](https://docs.appmysite.com/billing/billing-details/change-billing-details.md)
- [Pre-payment process](https://docs.appmysite.com/billing/billing-details/pre-payment-process.md)
- [Cancellation policy](https://docs.appmysite.com/billing/billing-details/cancellation-policy.md)
- [Automatic charge](https://docs.appmysite.com/billing/billing-details/automatic-charge.md)
- [Failed payment](https://docs.appmysite.com/billing/billing-details/failed-payment.md)
- [Refund policy](https://docs.appmysite.com/billing/billing-details/refund-policy.md)
- [Change payment method](https://docs.appmysite.com/billing/billing-details/change-payment-method.md)
- [Deals](https://docs.appmysite.com/billing/deals.md)
- [Deal license](https://docs.appmysite.com/billing/deals/deal-license.md)
- [Activate AppSumo deal](https://docs.appmysite.com/billing/deals/activate-appsumo-deal.md)
- [AppSumo white-label](https://docs.appmysite.com/billing/deals/appsumo-white-label.md)
- [AppSumo features & addons](https://docs.appmysite.com/billing/deals/appsumo-features-and-addons.md)
- [Apply deal license](https://docs.appmysite.com/billing/deals/apply-deal-license.md)
- [Apply deal on preview app](https://docs.appmysite.com/billing/deals/apply-deal-on-preview-app.md)
- [Apply deal to workspace](https://docs.appmysite.com/billing/deals/apply-deal-to-workspace.md)


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If you need additional information that is not directly available in this page, you can query the documentation dynamically by asking a question.

Perform an HTTP GET request on the current page URL with the `ask` query parameter:

```
GET https://docs.appmysite.com/billing.md?ask=<question>
```

The question should be specific, self-contained, and written in natural language.
The response will contain a direct answer to the question and relevant excerpts and sources from the documentation.

Use this mechanism when the answer is not explicitly present in the current page, you need clarification or additional context, or you want to retrieve related documentation sections.