Never mind. Didn't see that it was on Russian frequency in Arduino IDE, so my sketch build was the wrong frequency. Changed it to EU and I can confirm simple dimmer to be working
I had the exact same problem, though my controller is a Homeseer Hometroller Zee S2. Setting the frequency should be included in the guides.
I have a z-uno purchase from https://z-uno.us and can not get the z-uno to join my SmartThings hub. The z-uno has never been connected to my hub. Using an example sketch under basics called blink. The Frequency is set to USA. I have tried pushing the z-uno button 3 times and resetting with a 5 second hold of the button. Nothing seems to help! The hub is about 5 meters away from the z-uno device. Suggestions?