If you want to see your bandwidth usage over time (custom date select) or total since subscription started there are 2 places to see this.
The graph of your bandwidth usage will be at the bottom of the Rotating Residential page of your dashboard.
Select a date range to view the traffic each hour during that range.
At the top of the Rotating Residential page you will also see bandwidth usage.
Here you will be able to see your used data and remaining along with the expiration date.
Note: Sometimes this is delayed for up to 1 hour.