diff --git a/Darwin/Entitlements.plist b/Darwin/Entitlements.plist
index 70084b4..1b0cdf5 100644
--- a/Darwin/Entitlements.plist
+++ b/Darwin/Entitlements.plist
@@ -2,7 +2,11 @@
 <!DOCTYPE plist PUBLIC "-//Apple//DTD PLIST 1.0//EN" "http://www.apple.com/DTDs/PropertyList-1.0.dtd">
 <plist version="1.0">
 <dict>
+	<key>com.apple.developer.devicecheck.app-attest-opt-in</key>
+	<array>
+		<string>CDhash</string>
+	</array>
 	<key>com.apple.developer.devicecheck.appattest-environment</key>
-	<string>development</string>
+	<string>$(APP_ATTEST_ENVIRONMENT)</string>
 </dict>
 </plist>
diff --git a/Darwin/PediFoods.xcodeproj/project.pbxproj b/Darwin/PediFoods.xcodeproj/project.pbxproj
index 9a9e402..5fdba32 100644
--- a/Darwin/PediFoods.xcodeproj/project.pbxproj
+++ b/Darwin/PediFoods.xcodeproj/project.pbxproj
@@ -178,6 +178,7 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 496EB72F2A6AE4DE00C1253B /* PediFoods.xcconfig */;
 			buildSettings = {
+				APP_ATTEST_ENVIRONMENT = development;
 				DEVELOPMENT_TEAM = K4E5BZMM4V;
 				ENABLE_PREVIEWS = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "Pedi Foods";
@@ -196,8 +197,9 @@
 			isa = XCBuildConfiguration;
 			baseConfigurationReference = 496EB72F2A6AE4DE00C1253B /* PediFoods.xcconfig */;
 			buildSettings = {
-				CODE_SIGN_IDENTITY = "Apple Distribution";
-				CODE_SIGN_STYLE = Manual;
+				APP_ATTEST_ENVIRONMENT = production;
+				CODE_SIGN_IDENTITY = "Apple Development";
+				CODE_SIGN_STYLE = Automatic;
 				DEVELOPMENT_TEAM = K4E5BZMM4V;
 				ENABLE_PREVIEWS = YES;
 				INFOPLIST_KEY_CFBundleDisplayName = "Pedi Foods";
@@ -206,7 +208,7 @@
 				INFOPLIST_KEY_UISupportedInterfaceOrientations = UIInterfaceOrientationPortrait;
 				LD_RUNPATH_SEARCH_PATHS = "@executable_path/Frameworks";
 				"LD_RUNPATH_SEARCH_PATHS[sdk=macosx*]" = "@executable_path/../Frameworks";
-				PROVISIONING_PROFILE_SPECIFIER = "com.br.pedifoods.app AppStore";
+				PROVISIONING_PROFILE_SPECIFIER = "";
 				SUPPORTED_PLATFORMS = "iphoneos iphonesimulator";
 				SUPPORTS_MACCATALYST = NO;
 				TARGETED_DEVICE_FAMILY = 1;
diff --git a/Sources/PediFoods/Services/GuestSessionService.swift b/Sources/PediFoods/Services/GuestSessionService.swift
index 869c3ed..411bace 100644
--- a/Sources/PediFoods/Services/GuestSessionService.swift
+++ b/Sources/PediFoods/Services/GuestSessionService.swift
@@ -93,6 +93,7 @@ actor GuestSessionService {
 
 #if os(iOS)
     private func refreshTokenWithAppAttest() async throws -> String {
+        print("[GuestSessionService] DCAppAttestService.isSupported = \(DCAppAttestService.shared.isSupported), existingKeyId = \(store.appAttestKeyId ?? "nil")")
         guard DCAppAttestService.shared.isSupported else {
             // Simulator can never support App Attest (hardware limitation,
             // not environment-specific) — server has its own documented
@@ -112,6 +113,15 @@ actor GuestSessionService {
                 // other error (network blip, timeout, decode issue) must
                 // NOT wipe a perfectly valid registered key.
                 store.appAttestKeyId = nil
+            } catch let error as DCError {
+                // DeviceCheck itself rejects the key locally (e.g. the app
+                // was reinstalled and the Secure Enclave key backing this
+                // keyId no longer exists) - distinct from the server
+                // rejecting it, but equally unrecoverable without a fresh
+                // key. Without this, generateAssertion fails the same way
+                // forever since appAttestKeyId is never cleared.
+                print("[GuestSessionService] existing key rejected locally, re-attesting with a fresh key: \(error)")
+                store.appAttestKeyId = nil
             }
         }
 
@@ -141,9 +151,22 @@ actor GuestSessionService {
     }
 
     private func handshakeWithFreshAttestation(challenge: String) async throws -> String {
-        let keyId = try await DCAppAttestService.shared.generateKey()
+        let keyId: String
+        do {
+            keyId = try await DCAppAttestService.shared.generateKey()
+        } catch {
+            print("[GuestSessionService] generateKey failed: \(error)")
+            throw error
+        }
+
         let clientDataHash = Data(SHA256.hash(data: Data(challenge.utf8)))
-        let attestationObject = try await DCAppAttestService.shared.attestKey(keyId, clientDataHash: clientDataHash)
+        let attestationObject: Data
+        do {
+            attestationObject = try await DCAppAttestService.shared.attestKey(keyId, clientDataHash: clientDataHash)
+        } catch {
+            print("[GuestSessionService] attestKey failed: \(error)")
+            throw error
+        }
 
         let payload = GuestSessionAttestPayload(
             platform: "ios",
@@ -175,7 +198,13 @@ actor GuestSessionService {
 
     private func handshakeWithAssertion(keyId: String, challenge: String) async throws -> String {
         let clientDataHash = Data(SHA256.hash(data: Data(challenge.utf8)))
-        let assertionObject = try await DCAppAttestService.shared.generateAssertion(keyId, clientDataHash: clientDataHash)
+        let assertionObject: Data
+        do {
+            assertionObject = try await DCAppAttestService.shared.generateAssertion(keyId, clientDataHash: clientDataHash)
+        } catch {
+            print("[GuestSessionService] generateAssertion failed: \(error)")
+            throw error
+        }
 
         let payload = GuestSessionAttestPayload(
             platform: "ios",
diff --git a/Sources/PediFoods/Views/Main/PublicLocationPickerView.swift b/Sources/PediFoods/Views/Main/PublicLocationPickerView.swift
index 085b911..f5263e1 100644
--- a/Sources/PediFoods/Views/Main/PublicLocationPickerView.swift
+++ b/Sources/PediFoods/Views/Main/PublicLocationPickerView.swift
@@ -161,6 +161,7 @@ struct PublicLocationPickerView: View {
                 errorMessage = "Nenhum estado disponível no momento."
             }
         } catch {
+            print("[PublicLocationPickerView] loadLocations failed: \(error)")
             errorMessage = "Não foi possível carregar. Tente novamente."
         }
         isLoading = false