For me, everything is ok, no bug.
- Some of the waiting time were a little bit short sometimes at the beggining ; also one at the end "think about..."
- somewhere in the middle, "efore" instead of "before"
Also (spoiler !) :

Thanks for the feedback, I'll take a look at that

Excellent bug reports, you were completely right! I've uploaded a final version now.

Hmm, I wanted to give credit to the original author, however I seemed to have duplicated the upload, I don't seem to be able to remove the testing version, would an admin be able?

Of course

Cheers