If you are receiving Error 400: policy_enforced when trying to log into Copper, you will need to authorize our application on your Google Workspace account.
To authorize Copper on your Google Workspace account:
Open the Google Workspace Admin Console at admin.google.com
Go to Security > API Controls > Third party access and enable Copper
Click here for Google's reference guide on this authorization.
If you are still unable to log in after follow these steps, get in touch with our support team using the in-app chat.