diff --git a/infrastructure/authentication/auth_service_impl.go b/infrastructure/authentication/auth_service_impl.go
index 69bbe6096..53fe0f025 100644
--- a/infrastructure/authentication/auth_service_impl.go
+++ b/infrastructure/authentication/auth_service_impl.go
@@ -157,11 +157,33 @@ func getPrioritizedApiUrl(customUrl string, engineUrl string) string {
 		return engineUrl
 	}
 
+	// #IDE-1488 Fix for production debugging issue on the EU server.
+	if isApiSubdomain(defaultUrl, customUrl) {
+		return defaultUrl
+	}
+
 	// Otherwise, return the custom URL set by the user.
 	// FedRAMP and single tenant environments.
 	return customUrl
 }
 
+func isApiSubdomain(domain, subdomain string) bool {
+	domain = strings.TrimPrefix(domain, "https://")
+	subdomain = strings.TrimPrefix(subdomain, "https://")
+
+	if !strings.HasPrefix(domain, "api.") || !strings.HasPrefix(subdomain, "api.") {
+		return false
+	}
+
+	domain = strings.TrimPrefix(domain, "api.")
+	subdomain = strings.TrimPrefix(subdomain, "api.")
+
+	domain = strings.ToLower(strings.TrimSpace(domain))
+	subdomain = strings.ToLower(strings.TrimSpace(subdomain))
+
+	return strings.HasSuffix(subdomain, "."+domain)
+}
+
 func (a *AuthenticationServiceImpl) UpdateCredentials(newToken string, sendNotification bool, updateApiUrl bool) {
 	a.m.Lock()
 	defer a.m.Unlock()
diff --git a/infrastructure/authentication/auth_service_impl_test.go b/infrastructure/authentication/auth_service_impl_test.go
index 6d0b19c65..7ed7ba9f2 100644
--- a/infrastructure/authentication/auth_service_impl_test.go
+++ b/infrastructure/authentication/auth_service_impl_test.go
@@ -341,6 +341,12 @@ func TestGetApiUrl(t *testing.T) {
 			engineUrl:      "",
 			expectedResult: customUrl,
 		},
+		{
+			name:           "Default URL when custom URL is subdomain",
+			customUrl:      "https://api.eu.snyk.io",
+			engineUrl:      "",
+			expectedResult: defaultUrl, // equals to "https://api.snyk.io"
+		},
 	}
 
 	for _, tt := range tests {