Status 403 means your account does not have the appropriate permissions to access the data you are requesting. Check with the Super Admin on your team or whoever has the correct permissions inside your organization.
Sometimes an integration may respond with a 403 error if you have a billing problem or an issue related to quotas/limits or other organization configurations.
If the problem persists, double check that your integration (example: CRM or Cloud Storage) is in good standing. If that does not help, contact Flatly Support.