Hi Boris,

I am assuming you are using cables no longer than 3 meters (not 36 meters).
That is indeed very weird. 
I have not often heard an MST Hub working and giving such errors … perhaps the Power Adapter of the HUB is not (completely) well functioning … perhaps you can test that with the startech adapter to see if that makes a difference … that should use the same amount of power.
5V 2.4Amp.