Morse Mastermind

I really like this app, it allows you to test every single number, and letter of Morse code except punctuation. The only problem I have is whenever I go to the setting, I only get some of the letters to choose from whenever I hear something, so maybe I would hear five dashes, which would be zero, but I can’t see zero on the keyboard because it’s off the screen. I would love it if you could compress the screen a little more, or adjust it in settings. please have an update on this, I beg you, thanks!