When a renewal payment fails, the site moves through defined stages - Grace Period, Soft Suspend, and Hard Suspend - with clear on-site banners and email notifications at each step. If the invoice remains unpaid, the subscription is eventually canceled and the site is downgraded to Trial before removal, following the existing trial deletion flow. Admin access remains available throughout all stages, with a banner linking to billing. Paying the outstanding invoice at any stage before cancellation instantly restores the site to Active.