- Log in to the Google Admin console.
- From the Home page, go to Security API controls.
- Under App access control, click MANAGE THIRD-PARTY APP ACCESS.
- Add a filter to find the Upsales app in the list. Enter Upsales in the Contains field, and click APPLY.
- Check the box for Upsales and click Change access
- Choose the Trusted option to allow access to all Google services.
- Click CHANGE.