Hello,

sorry for the late answer. In our installation guide: http://www.hotspotsystem.com/en/hotspot/install_guide_mikrotik.html , step 2:

2. Let's add the hotspot service to wlan Click IP > HotSpot and the hotspot Setup box, choose wlan1 as hotspot interface. You can accept default values but choose none for certificate. Leave the IP as it is (10.5.50.x).”

You probably changed this IP to 192.168.x.x.