Aimuonos 18.5inch Portable Monitor review - Part 2.

With a new power cord provided from where we got the monitor, we were now able to get a blue screen on the monitor that we couldn't get before (it was dead) but now all it does is show a blue screen for a minute that says "no signal". We followed the instructions exactly according to the manual with HDMI and, disappointingly, still cannot get this monitor to work.
Anyone else with this problem? Suggestions? We work with a lot of computers in our business and have never run into this before. We sure would love to get this Aimuonos monitor working.
One suggestion we do have is that since this monitor is supposed to be great for travel, it needs to come with a sturdy bag to take it in to keep it safe. The size of the monitor is larger that regular laptop or monitor carry bags and lugging a big box around isn't great when catching a plane.