I am trying to select WPA2 security for this router, but the setting is only for "WPA/WPA2". The problem with it is that the router is a part of a roaming network and it has to have the security setting that's the same as other access points (WPA2). If I cannot select WPA2 only, devices would not roam to it, so it will be effectively useless :-(. I cannot fid a way to do so via the GUI. Any way to do it?