If you're canceling a paid plan, you will still be able to access your account until the end of your current billing cycle. After the billing period ends, your account will be closed, but any associated data (Goals, Annual / Quarterly Planning, etc.) will be kept for 60-days, after which they will be deleted permanently.

If you're canceling on the Free Forever plan, your account will be closed immediately. And the associated data will be deleted permanently after 60 days.

If you wish to reactivate your account within 60 days after canceling, simply log into your account and resubscribe to your plan.