My credit card number changed recently and I forgot to update it on ShipStation. They attempted to process my payment yesterday, and because it declined, it shut everything down. I woke up this morning to the pictured email that my Stamps.com account has been disconnected, but no indication that my ShipStation account was shut off. I had to talk to both ShipStation and Stamps.com twice in order to figure out what was going on and get it fixed.
Typically with software, when a payment is declined they send you an email stating such & give you a few days to update your payment method. It hardly seems like a good use of the customer's time and customer service's time to shut down the entire account immediately, especially when so little info was provided to shed light on what was going on.