Click the box in the middle of the screen and type any code within the limit, you can change the limit on the bottom left. The machine will try to get your code. 0-5 will take up to 30seconds. 6-10 may take a bit. Above 10 will take a bit of time. The closer your code digits to your limit set will make it faster. Enjoy!
Thanks Blueberry for helping with a bug! (CODE ABOVE LIMIT WILL NOT WORK)