@yosefromano Stripe does not support installments directly. In Stripe 6.0 we check the end date of the subscription against the recurring contribution in CiviCRM and end the stripe subscription if we've reached the Civi end date.
Please ensure that you are running the ProcessStripe scheduled job every hour or you will have issues with failed/uncaptured payments appearing on customer credit cards and blocking their balance for up to a week!
I do not see this scheduled job. Can you provide the parameters so I can manually add?
What should happen is when an invoice.payment_succeeded event is received a contribution is completed/added and the function handleInstallmentsForSubscription() is called to check if we should end the subscription or not.