In order to check your balance history you must press on your current amount next to the deposit tab, then Account (For mobile press current amount - account - the 3 stacked lines in the top left corner of the screen).
Once you do that, from the tab History, you need to select Betting P&L. You will then see 3 options for 24 hours, 7 days, and 30 days, for the Sportsbook and the Casino section of the site respectively.
In the second tab on the right, named From - Until, you can search for specific dates or a specific period of time.