In the 'Reports' tab of your account, you will find a lots of reports to track your sales on a monthly, yearly basis or a day to day period.
The monthly report ('Reports/Monthly') is used to calculate all data from others reports.
Ex: on the yearly report, a month in red means that data are not updated, because the monthly report of this month has not been reviewed till the last calendar day of the month.
The monthly report is updated each 24 hours. To force an update of your monthly data, you can click on the 'Update' button at the bottom of the first chart in the monthly report.
In 'Reports/Monthly' at the bottom of the first chart, a 'Download – details' button enables to export all your sales data for the selected month.