Google Sheets Authentication

I am trying to add a web service on the FME server (Google Sheets - safe google sheets). I put in the credentials and click authorize, a pop up appears. It says "FME wants to access your Google Account", I click allow. Then the page refreshes and says:

Make sure you trust FME

Sign in or provide access to FME

To sign in or provide access:

1. Copy the authorization code from the Authorization code section.
2. Navigate to FME.
3. Paste the authorization code on the FME screen.

Authorization code

Please copy this code, switch to your application and paste it there

Where do I navigate to FME? On the Web?

Where do I paste the code?

I checked my google account's security for FME and there is no option of adding the code.