# Installation issues (GPT for Sheets – Autosheet)

## The add-on doesn't load / I can't sign in

**Problem**: If your organization uses a firewall or proxy, it may prevent the add-on from loading or from authenticating your user account.

> **Solution**
>
> Ask your IT administrator to whitelist the following domains:
>
> ```
> *.autosheet.com
> *.gptforwork.com
> *.google.com
> *.googleapis.com
> *.googleusercontent.com
> ```

## I want to uninstall

**Problem**: You are not using the add-on in Sheets or Docs, and you want to uninstall it.

> **Solution**
>
> To remove the add-on from Sheets and Docs, follow our [uninstallation guide](https://autosheet.com/docs/gpt-for-sheets/setup/uninstall).