This section is about connecting your Zuora and Salesforce (if applicable) tenants to the Subscription Suite. You'll want to do this first, before moving on to the rest of the set-up.
Connect Zuora Tenent
Navigate to Settings / Credentials in the navigation bar.
Enter Zuora Credentials here and indicate if you are using a sandbox environment and if it is an EU tenant.
Note: if you have ORDERS enabled you will need to go to the Settings / Zuora and activate the "use orders" checkbox.