A:
- Login to https://admin.google.com
- Go to Menu → Security → Access and data control → API controls
- Click Manage App Access
- Find Upsales in the list of apps. Use Add a filter to narrow the list if needed.
- Point to Upsales and click Change access
- Choose the Trusted option to allow access to all Google services.
- Click Change access to save.
For more details, see Google's guide Control which apps access Google Workspace data.