<billing>
Billing & plans
Upgrade or downgrade a plan from Account Settings → Billing → Change Plan — changes take effect immediately, and any price difference is prorated for the remainder of the current billing period.
Lifetime plans are a one-time purchase and don't require ongoing billing management, though they can still be upgraded to a higher lifetime tier if one becomes available, with the original purchase credited toward the difference.
Cancel from Account Settings → Billing → Cancel Plan. Access continues until the end of the current billing period rather than ending immediately, so a canceled plan doesn't cut off a class mid-lesson.