Hey Donut,
After reading through this staff report I've come to the following conclusion:
You should have used admin chat or psay to make sure the staff could have seen that it should be cancelled, this way David might have seen it on time.
However, making a staff report on David for this is nonsense. David should have opened a chat to see what happened, he has been told this for future reference with some future tips.
The warning will be removed due to you not wanting it to be placed.
Consider this staff report denied.
~Lock pls x2