I got to level 4. If you mouse over one of the stars there is an alphabet that shows up. also you can right click and zoom in which makes the puzzle easier to see.
I've wasted most of the day trying to figure this out and came to the conclusion...
I dont know
those sites listed before supposedly have nothing to do with the film, but it could all be a ploy. I hoped it would be Voltron, but those rumors were debunked. Whatever it is, the marketing team did a good job since it considered "viral" now and people online are trying to solve the mysery behind it