Unfortunately, WiFiBOX does not have a feature that shows your current data usage.
You may be able to check on your device
You may be able to view an approximate amount of data used from the settings on your smartphone, tablet, or other connected device.
However, the amount shown may include data used through other Wi-Fi networks, so it may not match your actual WiFiBOX usage.
Apps for checking data usage
You may find apps or instructions online that can help you check data usage over Wi-Fi.
Please search online for a method that works with your device.

The WiFiBOX Customer Support Center cannot provide assistance with smartphone settings or third-party apps.