Amazon Echo commands

I tried that. The camera icon is green, but Alexa only gives me the white border. When I mouse click on the pic it does go full screen, but Alexa's trigger doesn't. There must be another associated trigger that you have set that's directly connected to this. I do have the Amazon Echo Control set to "select".
Did you ever get this working? After reading through this thread and compiling the information for reference, I did notice this, which may or may not help you.

If you wish to implement individual camera control, ensure the Amazon Echo setting on each camera's properties pages is enabled prior to device discovery. To do this, in the individual camera options/general page "Amazon Echo Control:" section, use the drop down and choose "Select".