After you log in with your account details and go to the dashboard, you will find basic information regarding your payments' performance, gathered as a summary with numbers and diagrams for a specific time frame.

As you can see, there are summaries for the following:
Gross Volume (presented in Euro by default, but you can change the currency in your account settings) - amount resulting from successful charges
Successful payments - number of successful charges along with the conversion rate (successful charges/declined charges ratio)
Customers Created - number of customers created
New Subscriptions/Rebills - number of new subscriptions created along with the number of successfully rebilled subscriptions
Chargebacks - number of chargebacks
Every time you change the time frame, all the details will also be changed accordingly.