While waiting for this idea to be delivered. https://success.salesforce.com/ideaView?id=08730000000BroKAAS
We take no responsibility and still encourage Salesforce to deliver this feature natively.
We show Salesforce accounts that are linked to Trailblazer.me and have the Manage Billing permission. If your account is missing, check that you connected the account to your Trailblazer.me profile. Then verify that you’ve been assigned the Manage Billing permission in the related org.