In Mobility Express GUI, when I setup a guest user in "WLAN Users" with "Lifetime" configured as 7200 seconds, the account will be automatically deleted after 2 hours in local user database. For example, "Device 1" is connected using this account. It will be disconnected after 2 hours because this account doesn't exist anymore on the controller. My question is, is it possible that we just deny "Device 1" but allow a new "Device 2" to connect and still keep the account on the controller instead of deleting it? Thanks.