The StrideLinx router's VPN data usage is only part of the StrideLinx router's total internet data usage. For a complete overview, please read How much data does my StrideLinx router use?.
The VPN data usage includes data over the VPN connection and the use of HTTP and VNC WebAccess. All other data does not travel over the VPN connection is therefore not included in the VPN data usage statistics.
An individual StrideLinx router's VPN data usage can be viewed in the Cloud connection status component on Device pages in the Portal. The VPN data usage for all StrideLinx routers in your StrideLinx Cloud company collectively can be viewed at Admin > Usage.