Sent when an automatic subscription payment attempt has failed, but the client hasn't been cancelled yet. Subscription payments are attempted on the expiration date, then 2 days later, then 4 days later, and then for the last time 6 days after the expiration date. The first 3 attempts will send a "decline" status, but on the 4th try 6 days after the expiration date, a "suspend" notification is sent see "suspend" below.