# Twelve Data Support

> Advice and answers from the Twelve Data Team

## Guides

- [Attribution guidelines for using Twelve Data](https://support.twelvedata.com/en/articles/12647398-attribution-guidelines-for-using-twelve-data.md): Ensuring transparency and compliance when using Twelve Data content
- [Why haven't I received my confirmation email?](https://support.twelvedata.com/en/articles/6489024-why-haven-t-i-received-my-confirmation-email.md): Are you still waiting for your confirmation email from Twelve Data? Here's what most likely happened and how to solve the issue.
- [Sign up problems](https://support.twelvedata.com/en/articles/5331024-sign-up-problems.md): Common sign up issues and their solutions
- [Problems with data](https://support.twelvedata.com/en/articles/5183240-problems-with-data.md): Questions and concerns that might arise when analyzing the data
- [Why is historical stock split data missing from the API?](https://support.twelvedata.com/en/articles/10445216-why-is-historical-stock-split-data-missing-from-the-api.md): Troubleshooting missing historical stock split data in the API.
- [Symbol is missing](https://support.twelvedata.com/en/articles/5179026-symbol-is-missing.md): Learn how to locate missing symbols

## FAQs

- [Using coupon code](https://support.twelvedata.com/en/articles/12907203-using-coupon-code.md): Learn how to apply coupon code

## Spreadsheets add-ons

- [Google Sheets Add-on Installation Guide](https://support.twelvedata.com/en/articles/5702489-google-sheets-add-on-installation-guide.md): Detailed installation process of Google Sheets Add-on
- [Google Sheets Add-on Documentation](https://support.twelvedata.com/en/articles/5702399-google-sheets-add-on-documentation.md): Add-round overview of features in Google Sheets Add-on
- [Excel Add-in \(Windows\) Installation Guide](https://support.twelvedata.com/en/articles/5608058-excel-add-in-windows-installation-guide.md): Advice and instructions for an easy install of Excel Add-in \(Windows\)
- [Excel Add-in \(Windows\) Documentation](https://support.twelvedata.com/en/articles/5705936-excel-add-in-windows-documentation.md): Comprehensive documentation for Excel Add-in \(Windows\)