# Page Not Found

The URL `files/isf2ouOkXiLVs2ZcJQKr` does not exist. This page may have been moved, renamed, or deleted.

## Suggested Pages

You may be looking for one of the following:
- [Why doesn’t the discount code box appear in the checkout?](https://ymq-app.gitbook.io/ymq-product-options-app/faq/why-doesnt-the-discount-code-box-appear-in-the-checkout.md)
- [Why do my options appear twice?](https://ymq-app.gitbook.io/ymq-product-options-app/faq/why-do-my-options-appear-twice.md)
- [How to add Virtual Options to a product](https://ymq-app.gitbook.io/ymq-product-options-app/getting-started/how-to-add-virtual-options-to-a-product.md)
- [Invoices](https://ymq-app.gitbook.io/ymq-product-options-app/email-notifications-and-packing-slips-and-invoices/invoices.md)
- [Why theme's ajax cart is not working after using app](https://ymq-app.gitbook.io/ymq-product-options-app/faq/why-themes-ajax-cart-is-not-working-after-using-app.md)

## How to find the correct page

If the exact page cannot be found, you can still retrieve the information using the documentation query interface.

### Option 1 — Ask a question (recommended)

Perform an HTTP GET request on the documentation index with the `ask` parameter:

```
GET https://ymq-app.gitbook.io/ymq-product-options-app/faq/why-doesnt-the-discount-code-box-appear-in-the-checkout.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.

### Option 2 — Browse the documentation index

Full index: https://ymq-app.gitbook.io/ymq-product-options-app/sitemap.md

Use this to discover valid page paths or navigate the documentation structure.

### Option 3 — Retrieve the full documentation corpus

Full export: https://ymq-app.gitbook.io/ymq-product-options-app/llms-full.txt

Use this to access all content at once and perform your own parsing or retrieval. It will be more expensive.

## Tips for requesting documentation

Prefer `.md` URLs for structured content, append `.md` to URLs (e.g., `/ymq-product-options-app/faq/why-doesnt-the-discount-code-box-appear-in-the-checkout.md`).

You may also use `Accept: text/markdown` header for content negotiation.