I only see black screen with background music. My system is better than min requirements. Why I can't play it?

How does the demo differ from what will be offered in the full release? Is this a timed demo (you can only play the first 15 mins)? Or you can only play the first 5 levels? Or is this basically an EA release that won't get updated? I have the game on my wishlist, and plan on buying it on release. I don't need a demo to convince me, so if this is just like a teaser where you play the first two levels, then I don't care to download it as I've already seen more watching videos of it. But if this is kind...

Without any controls whatsoever for presentation, I don't seem to be able to move it off of one monitor and onto the other, it just stays in what appears to be borderless full screen mode on that monitor. I basically can't evaluate this game as long as I'm unable to put it on the correct display for me to play it; it insists on going onto the monitor I reserve for my task bar and communication apps, and the window can't be moved....

I usually play on a 27'' iMac in fullscreen mode, but the game area seems to be stick to the top margin. It would be nice to have the game area centered on the screen, and/or expanded to entirely fit the screen. Screenshot: https://ibb.co/8BBqQ62

Where do you place your 1st tower? Can someone post a screen shot? No matter what I do I cannot place a tower period.