Cancelling a plan
Your unit's page, Plan, Cancel subscription. You keep the plan until the end of the month you've paid for, then the unit moves to the free plan. Changed your mind before then? Press Keep my plan. Nothing is deleted. If the unit is over the free plan's limits it keeps working, but you can't add more until you're back under them or upgrade again. Features the free plan doesn't include (styles, custom CSS, your own maps) are kept and come back when you upgrade.