You can follow the steps below to whitelist the Right-Hand application in your GSuite admin portal.
Login to your GSuite Admin portal.
Navigate to Security > Access and data control > API controls. On the API controls page, scroll down to the Domain-wide delegation section.
Click on Manage Domain-Wide Delegation.
On the Manage Domain-wide delegation page, click Add new. A Add a new client pop-up appears.
Type or copy and paste the following details in the new client pop-up modal and click Authorise
Client ID: 106061374448296891770
OAuth scopes:
Click Authorize. The Right-hand application will be whitelisted in the GSuite admin portal.