I notice people giving instructions in the past tense all the time.
The response is always frustration - either outward, or concealed.
"Why did you do that?"
"You shouldn't have done that!"
"You forgot to do this again!"
These instructions aren't useful. What's the ideal response here? It's impossible to give a useful response without owning a time-machine.
One can't go back in time and un-not-do something, one can't go back in time and have-not-forgotten something.
Try giving instructions in the future tense instead, these are actionable, and don't piss people off.
"In the future, don't do this."
"Please find a way to remind yourself of this. Maybe use a calendar or notebook"
Don't be a jerk, give instructions in the future tense.