Data about all customers is stored in the Customers tab. You can manage this data using the Control Panel tools.
To view and work with the data of a particular customer, you need to go to the card of the selected customer by clicking on their name.
In the customer card you will find all filled in data, which you can edit, update, create a subscription for this customer and so on.
The History block contains data about all subscriptions, operations, transactions and even sent emails related to this customer.