diff --git a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubClient.java b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubClient.java
index 79ffab1d75..381d3b722b 100644
--- a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubClient.java
+++ b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubClient.java
@@ -22,6 +22,7 @@
 public class XtmHubClient {
   private final XtmHubConfig config;
   private final HttpClientFactory httpClientFactory;
+  private static final String platformIdentifier = "openaev";
 
   public XtmHubConnectivityStatus refreshRegistrationStatus(
       String platformId, String platformVersion, String token) {
@@ -57,12 +58,13 @@ mutation RefreshPlatformRegistrationConnectivityStatus($input: RefreshPlatformRe
             "input": {
               "platformId": "%s",
               "platformVersion": "%s",
-              "token": "%s"
+              "token": "%s",
+              "platformIdentifier": "%s"
             }
           }
         }
         """,
-            platformId, platformVersion, token);
+            platformId, platformVersion, token, platformIdentifier);
 
     JsonElement element = JsonParser.parseString(mutationBody);
     return new StringEntity(element.toString());
@@ -90,6 +92,10 @@ private XtmHubConnectivityStatus parseResponseAsConnectivityStatus(ClassicHttpRe
         return XtmHubConnectivityStatus.ACTIVE;
       }
 
+      if (status.equals(XtmHubConnectivityStatus.NOT_FOUND.label)) {
+        return XtmHubConnectivityStatus.NOT_FOUND;
+      }
+
       return XtmHubConnectivityStatus.INACTIVE;
     } catch (Exception e) {
       log.warn("Error occurred while parsing XTM Hub connectivity response: {}", e.getMessage(), e);
diff --git a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityService.java b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityService.java
index 89d3f123d3..347ffab83e 100644
--- a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityService.java
+++ b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityService.java
@@ -5,9 +5,11 @@
 import java.net.*;
 import lombok.Getter;
 import lombok.RequiredArgsConstructor;
+import lombok.extern.slf4j.Slf4j;
 import org.springframework.http.HttpStatus;
 import org.springframework.stereotype.Service;
 
+@Slf4j
 @Service
 @RequiredArgsConstructor
 public class XtmHubConnectivityService {
@@ -28,8 +30,21 @@ boolean checkIsReachable() {
       connection.setRequestMethod("HEAD");
       connection.setConnectTimeout(5000);
       connection.setReadTimeout(5000);
-      return HttpStatus.valueOf(connection.getResponseCode()).is2xxSuccessful();
+      HttpStatus httpStatus = HttpStatus.valueOf(connection.getResponseCode());
+      boolean isReachable = httpStatus.is2xxSuccessful();
+      if (!isReachable) {
+        log.warn(
+            "XTM Hub backend is not reachable on URl {}, response status: {}",
+            XtmHubConfig.getApiUrl(),
+            httpStatus);
+      }
+      return isReachable;
     } catch (Exception e) {
+      log.warn(
+          "XTM Hub backend is not reachable on URL {} due to {}",
+          XtmHubConfig.getApiUrl(),
+          e.getMessage(),
+          e);
       return false;
     } finally {
       if (connection != null) {
diff --git a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityStatus.java b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityStatus.java
index 8ecad44976..788b89f6d8 100644
--- a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityStatus.java
+++ b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubConnectivityStatus.java
@@ -2,7 +2,8 @@
 
 public enum XtmHubConnectivityStatus {
   ACTIVE("active"),
-  INACTIVE("inactive");
+  INACTIVE("inactive"),
+  NOT_FOUND("not_found");
 
   public final String label;
 
diff --git a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubService.java b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubService.java
index 9620b75514..1ae1efee27 100644
--- a/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubService.java
+++ b/openaev-api/src/main/java/io/openaev/xtmhub/XtmHubService.java
@@ -41,12 +41,16 @@ public PlatformSettings unregister() {
 
   public PlatformSettings refreshConnectivity() {
     PlatformSettings settings = platformSettingsService.findSettings();
-
     if (!isRegisteredWithXtmHub(settings)) {
       return settings;
     }
 
     ConnectivityCheckResult checkResult = checkConnectivityStatus(settings);
+    if (checkResult.status == XtmHubConnectivityStatus.NOT_FOUND) {
+      log.warn("Platform was not found on XTM Hub");
+      return platformSettingsService.deleteXTMHubRegistration();
+    }
+
     handleConnectivityLossNotification(settings, checkResult);
 
     return updateRegistrationStatus(settings, checkResult);
@@ -61,10 +65,9 @@ private ConnectivityCheckResult checkConnectivityStatus(PlatformSettings setting
         xtmHubClient.refreshRegistrationStatus(
             settings.getPlatformId(), settings.getPlatformVersion(), settings.getXtmHubToken());
 
-    boolean isActive = status == XtmHubConnectivityStatus.ACTIVE;
     LocalDateTime lastCheck = parseLastConnectivityCheck(settings);
 
-    return new ConnectivityCheckResult(isActive, lastCheck);
+    return new ConnectivityCheckResult(status, lastCheck);
   }
 
   private LocalDateTime parseLastConnectivityCheck(PlatformSettings settings) {
@@ -83,7 +86,7 @@ private void handleConnectivityLossNotification(
   private boolean shouldSendConnectivityLossEmail(
       PlatformSettings settings, ConnectivityCheckResult checkResult) {
 
-    return !checkResult.isActive()
+    return checkResult.status() != XtmHubConnectivityStatus.ACTIVE
         && hasConnectivityBeenLostForTooLong(checkResult.lastCheck())
         && isEmailNotificationEnabled(settings);
   }
@@ -101,12 +104,14 @@ private PlatformSettings updateRegistrationStatus(
       PlatformSettings settings, ConnectivityCheckResult checkResult) {
 
     XtmHubRegistrationStatus newStatus =
-        checkResult.isActive()
+        checkResult.status() == XtmHubConnectivityStatus.ACTIVE
             ? XtmHubRegistrationStatus.REGISTERED
             : XtmHubRegistrationStatus.LOST_CONNECTIVITY;
 
     LocalDateTime updatedLastCheck =
-        checkResult.isActive() ? LocalDateTime.now() : checkResult.lastCheck();
+        checkResult.status() == XtmHubConnectivityStatus.ACTIVE
+            ? LocalDateTime.now()
+            : checkResult.lastCheck();
 
     boolean shouldKeepEmailNotificationEnabled =
         !shouldSendConnectivityLossEmail(settings, checkResult);
@@ -126,5 +131,6 @@ private LocalDateTime parseRegistrationDate(PlatformSettings settings) {
   }
 
   /** Encapsulates the result of a connectivity check */
-  private record ConnectivityCheckResult(boolean isActive, LocalDateTime lastCheck) {}
+  private record ConnectivityCheckResult(
+      XtmHubConnectivityStatus status, LocalDateTime lastCheck) {}
 }
diff --git a/openaev-api/src/test/java/io/openaev/xtmhub/XtmHubServiceTest.java b/openaev-api/src/test/java/io/openaev/xtmhub/XtmHubServiceTest.java
index 9da4823fc9..1e14472fa3 100644
--- a/openaev-api/src/test/java/io/openaev/xtmhub/XtmHubServiceTest.java
+++ b/openaev-api/src/test/java/io/openaev/xtmhub/XtmHubServiceTest.java
@@ -76,6 +76,30 @@ void refreshConnectivity_WhenTokenIsNull_ShouldReturnSettingsUnchanged() {
     verifyNoInteractions(xtmHubEmailService);
   }
 
+  @Test
+  @DisplayName("Should remove XTM Hub registration when platform is not found in the hub")
+  void refreshConnectivity_WhenPlatformIsNotFound_ShouldRemoveRegistration() {
+    // Given
+    String token = "valid-token";
+    String platformId = "platform-123";
+    String platformVersion = "1.0.0";
+
+    mockSettings.setXtmHubToken(token);
+    mockSettings.setPlatformId(platformId);
+    mockSettings.setPlatformVersion(platformVersion);
+
+    when(platformSettingsService.findSettings()).thenReturn(mockSettings);
+    when(xtmHubClient.refreshRegistrationStatus(platformId, platformVersion, token))
+        .thenReturn(XtmHubConnectivityStatus.NOT_FOUND);
+
+    // When
+    xtmHubService.refreshConnectivity();
+
+    // Then
+    verify(platformSettingsService).deleteXTMHubRegistration();
+    verifyNoInteractions(xtmHubEmailService);
+  }
+
   @Test
   @DisplayName("Should update registration as REGISTERED when connectivity is ACTIVE")
   void refreshConnectivity_WhenConnectivityIsActive_ShouldUpdateAsRegistered() {