diff --git a/OPassData/General/DateInRegionTransform.swift b/OPassData/General/DateInRegionTransform.swift
index 33e79332..c5feca61 100644
--- a/OPassData/General/DateInRegionTransform.swift
+++ b/OPassData/General/DateInRegionTransform.swift
@@ -17,6 +17,6 @@ struct StringToDate: TransformFunction {
 
 struct IntToDate: TransformFunction {
     static func transform(_ time: Int) -> DateInRegion {
-        return DateInRegion(seconds: TimeInterval(time), region: Region.current)
+        return DateInRegion(seconds: .init(time), region: .current)
     }
 }
diff --git a/OPassData/Model/Attendee.swift b/OPassData/Model/Attendee.swift
index da181d2a..73e11cb6 100644
--- a/OPassData/Model/Attendee.swift
+++ b/OPassData/Model/Attendee.swift
@@ -20,7 +20,7 @@ struct Attendee: Hashable, Codable, Identifiable {
     @Transform<Scenario> var scenarios: OrderedDictionary<String, [Scenario]>
 
     private enum CodingKeys: String, CodingKey {
-        case id
+        case id = "_id"
         case eventId = "event_id"
         case userId = "user_id"
         case token
diff --git a/OPassData/Model/Scenario.swift b/OPassData/Model/Scenario.swift
index 534676ff..193f1d89 100644
--- a/OPassData/Model/Scenario.swift
+++ b/OPassData/Model/Scenario.swift
@@ -30,6 +30,23 @@ struct Scenario: Hashable, Codable, Identifiable {
         case attributes = "attr"
         case used
     }
+
+    init(from decoder: Decoder) throws {
+        let container = try decoder.container(keyedBy: CodingKeys.self)
+        self.id = try container.decode(String.self, forKey: .id)
+        self.order = try container.decode(Int.self, forKey: .order)
+        self.title = try container.decode(LocalizedCodeString.self, forKey: .title)
+        self.disabled = try container.decodeIfPresent(String.self, forKey: .disabled)
+        self._available = try container.decode(Transform<IntToDate>.self, forKey: .available)
+        self._expire = try container.decode(Transform<IntToDate>.self, forKey: .expire)
+        self.countdown = try container.decode(Int.self, forKey: .countdown)
+        self.attributes = try container.decode([String : String].self, forKey: .attributes)
+        if let used = try? container.decode(Int.self, forKey: .used) {
+            self.used = .init(seconds: .init(used), region: .current)
+        } else if let used = try? container.decode(DateInRegion.self, forKey: .used) {
+            self.used = used
+        } else { self.used = nil }
+    }
 }
 
 extension Scenario {