XPS 15 9550 after installing Dell Thunderbolt Dock (TB16) my Dell Adapter - USB-C to HDMI-VGA-Ethernet-USB stop working

I've bought TB16 and update all drivers (Dell Assist does it) and after lowing network settings to 75% my DELL monitors flickering less but now I have major issue since my Dell Adapter - USB-C to HDMI-VGA-Ethernet-USB stop working completely. When I plug in nothing happens (yes, adapter is working properly and yes cables are correct)

In first few days, randomly, Windows was enable to turn on output to adapter (after hour of plugin, plug out same adapter).

Now, it's completely useless. 

Can anyone help, any suggestion ?