# Troubleshooting GPT for Sheets – Autosheet

Find solutions and advice for troubleshooting various scenarios, including API key validation, billing and subscription, bulk processing errors, formula syntax issues, and rate limits.

- [Add-on not working](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/add-on-not-working): Troubleshoot multiple accounts errors, blank sidebars, and menu visibility problems.
- [API key issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/api-key-issues): Troubleshoot API key setup issues.
- [Billing issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/billing-issues): Troubleshoot credit issues and unexpected costs.
- [Bulk tool issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/bulk-tool-issues): Troubleshoot ownership permissions, stuck processes, and custom prompt issues.
- [GPT function issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/gpt-function-issues): Troubleshoot GPT function loading issues, error messages, and incomplete results.
- [Installation issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/installation-issues): Troubleshoot installation issues.
- [Rate limit issues](https://autosheet.com/docs/gpt-for-sheets/troubleshooting/rate-limit-issues): Troubleshoot rate limit errors, including service limits and API key restrictions.

If none of the listed solutions addresses your issue, reach out to our support team for further assistance.