A new game: get it while it's free

Six numbers has been released for free today through AppGratis. It's sort of like the original brainbow numbers, but with no time limit. It seems accessible until about level IV, once that guided tutorial ends. you're supposed to start the game. Whenever I click start, I get a screen that says tap here for help. I can't make the screen go away. Any ideas or tips would be helpful. I've also contacted rainbow, the developer. Whether it's accessible or not though, you should grab this today since there are free extra levels.