

Now open the same Google Sheet and sign in with your default Google account. Windows, Linux, or Chrome OS: Press Ctrl + Shift + n You can also use a keyboard shortcut to open an Incognito window in Chrome

If your default Google account is not the one that is associated with the Google add-on, the sidebar of the Google add-on may display a grey screen with the message refused to connect. This is a known issue in Google Sheets and it likely happens when a user is logged into multiple Google accounts in the same Google Sheet. It may happen that you open an add-on in Google Sheets and immediately crashes with a message saying Refused to Connect. Google Drive Refused to Connect - Troubleshooting
