The Billing page of Cloud Subscriptions shows your subscription history. This includes all updates made to existing subscriptions, as well as new subscriptions purchased across all of your 365Simple tenants.
Searching your Order History
You can use various search criteria at the top of the Billing page to search for previously purchased subscriptions, as well as any updated subscriptions.

Viewing your Subscription Purchases
When you purchase a new subscription from the Marketplace, a “New Subscription” is added to your history. In the example below, a new subscription for Microsoft 365 E3 was purchased with a license quantity of 100.

View a Subscription Update
When you update a subscription in My Subscriptions, a “Subscription Update” is added to your history. In the example below, the License Quantity for the Microsoft 365 E3 subscriptions was reduced by 9 (from 10 to 1).

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Understanding my 365Simple Subscriptions