Unfortunately, your data is likely gone. Based on the SAS On Demand for Academics FAQ's...
Does my data or content expire? If your account is not reactivated after an extended period of time, SAS OnDemand for Academics will deactivate your account and archive your content. After an additional period of inactivity the archived content will be removed from the SAS OnDemand for Academics systems. Archived accounts are subject to having content removed without notice and this is at the discretion of the SAS OnDemand for Academics Team. Per the license agreement, SAS has the right to remove any Content at any time.