Thank you so much! I'm happy you liked the game.
About the points:
1) Yes, I agree the name of the levels might be missed by some. Thank you for that suggestion.
2) I'm sorry that happened to you, I understand that can be frustrating. I didn't make the "undo" between screens because it makes the programming side of things a lot more complex. And I don't have all the time in the world to make this game.
3) I'm sorry you had trouble reading the font. I never thought of other people using programs to read the characters. I will consider this for my future projects.
Thank you for the effort of making this comment despite not knowing English! I appreciate it a lot.