You're seeing that message because we attempted to auto-renew your domain, and the auto-renew failed. We do that about 45 days before the expiration date, so if the attempt fails you have time to update billing information before the domain expires. Once a domain expires it can become a lot more difficult to renew it, and after a certain point it isn't possible at all and you have to wait until you can register it new again.
Usually when a domain is suspended it will say that on your services page and it won't load your site. I'm not sure why it's not doing that, so I put the status back to active on our end just to prevent any potential issues. I recommend setting a remind for yourself to renew the domain before the expiration date, though, so it doesn't expire.
