server/models/Purchase.cs

@@ -11,7 +11,7 @@ namespace Sockeye.Models
     {
         public long Id { get; set; }
         public uint Concurrency { get; set; }       
-        public long CustomerId { get; set; }
+        public long? CustomerId { get; set; }
         [NotMapped]
         public string CustomerViz { get; set; }
         [Required]

server/models/SubscriptionServer.cs

@@ -14,6 +14,7 @@ namespace Sockeye.Models
 
         [Required]
         public string Name { get; set; }
+        public string IPAddress { get; set; }
         public bool Active { get; set; }
         public string Notes { get; set; }
         public DateTime Created { get; set; }