What vSZ version and what AP model, to what RADIUS server for 802.1x or HotSpot or...? What application is showing you this "inverted" info? Does the client also show the same 1.8mb (in) and 10.7bm (out), opposite what you are seeing on a screen in vSZ somewhere?
vSZ is version 3.4.2 - ap "Zone Flex T300". The RADIUS server is for HotSpot with slash page hosted on our server. I get this numbers directely since RADIUS database. This is the same client for Ruckus radius data and vsz client history stats