pm2 doesnt work with crontab

[plainbroke]

This is all I use in my crontab -e
15 07 * * * pm2 start mm
30 21 * * * pm2 stop all
Shuts MM down at 9:30 pm
Starts MM backup at 7:15 am
EVERYDAY.
I have a Black background color and the bar at the bottom using black background which makes it look like the screen is off basically.
That way it doesn’t flood the room with light at night.
Also less read / writes to the ssd drive I use for my MM.