Can't clear the Total Used Data on my Alcatel linkzone2 hotspot

Why cant I clear (reset) the Total Used Data on my hotspot?
I get a pop up error message "Can't operate when connecting to network!"
That doesn't make sense. If I'm not connected, I won't even be able to reach that page, which is at 192.168.0.1.
The hotspot is an Alcatel linkzone 2.