An active paid plan renews at the end of each billing period using the payment method stored with Stripe.
Settings → Plan & Billing shows whether automatic renewal is enabled and the next expected charge date. A trial with a payment method converts according to the renewal information shown there. A trial without a required payment method enters limited status when it ends unless billing is resumed.
Canceling schedules renewal to stop. The account remains active through the displayed paid period. Use Keep plan active before that period ends to remove a scheduled cancellation.