When I start to stream from the units (LU200,500,600, and Smart APP. I only see colour bars on the SDI out, and zero bit rate on the units

This shows that there is communication between the unit and LU2000. 

However, LU2000 is not able to receive the video feed, because the video ports are blocked. 

Please request your administrator to check if the video ports are open on the firewall  or forwarded to the server for your router or for your firewall. Then verify the setup  using the verify script on the configuration folder on LU2000 desktop. 

If you get all passed results, try to send the video  again and confirm you can see it on the SDI out. Check if you now have the bit rates on the unit.