Can a landlord force a tenant onto autopay?
You can encourage and default to autopay, but whether you can require a specific payment method depends on your lease terms and local law — making it the easy default usually works better than mandating it.
From the guide Autopay & Automated Reminders.
What happens if a payment fails
A failed AutoPay payment (insufficient funds, an expired card, a closed account) sends the tenant a notification and, depending on your settings, tells you. The tenant can update their payment method and pay rather than the month silently failing.
Read the whole guide: Autopay & Automated Reminders