Wingate is working fine.
I have been set up traffic rates for user X. This user have ip address 192.168.0.176 and he is assumed wingate service by ip.
Opening Balance has been set to 0.5
Traffic rates set to 0.1 in two fields that holds information about real transfered ammount of bytes from/to internet.
Then i'am go online with this ip and surf internet for a while. Total traffic i've made was more than limit, but internet access is still working!
I was look into account setting of this user:
Opening Balance is NEGATIVE
Total Charges contains cost of ALL traffic i used.
Why this is so unfair?