# Page Not Found

The URL `faq/sign-in` does not exist.

You might be looking for one of these pages:
- [Device setup/Login](https://docs.tapxphone.com/help/faq/sign-in.md)
- [Sign in](https://docs.tapxphone.com/guide/app-guide/sign-in.md)
- [Log in to Merchant’s portal](https://docs.tapxphone.com/guide/portal-guide/web-sign-in.md)
- [Installing Application](https://docs.tapxphone.com/help/faq/installation.md)
- [Getting started](https://docs.tapxphone.com/help/faq/start-app.md)

## How to find the correct page

1. **Browse the full index**: [/sitemap.md](https://docs.tapxphone.com/sitemap.md) - Complete documentation index
2. **View the full content**: [/llms-full.txt](https://docs.tapxphone.com/llms-full.txt) - Full content export

## Tips for requesting documentation

- For markdown responses, append `.md` to URLs (e.g., `/help/faq/sign-in.md`)
- Use `Accept: text/markdown` header for content negotiation