Kospet 2 - cant connect to wifi if ssid invisible

Hello Friends, I noticed such strange problem: when wifi ssid is invisible - Kospet cant see and cant connect to wifi network. Change ssid to visible - and everything is OK. In 2,4 and 5 GHz. Now I have to open guest visible networks in home (on every floor)… Last firmware. Any ideas what to do, to connect watch to networks with invisible ssid?