Thanks for this feedback! You're right, the start service command did contain a typo. The action had a typo in both code snippets too. I've updated the dev docs for this, verifying that the code snippets now work in the app.

I've heard similar feedback on #7. My plan is to reduce the digit count from 6 to 4, which should still prove you understand how the puzzle works, without making it unnecessarily complicated.

Thanks again for the feedback! I hope this helps unblock you and that you have fun with the rest of the game.