We are developing an MDM (Mobile Device Management) solution for device management purposes, and our current implementation process is as follows: 1. Configure DEP profile to obtain profile_uuid We configured a DEP profile with the following parameters to retrieve the profile_uuid: { "allow_pairing": true, "anchor_certs": [], "auto_advance_setup": true, "await_device_configured": false, "configuration_web_url": "", "department": "test define profile", "devices": ["MNWF07QD9M"], "is_mandatory": false, "is_mdm_removable": false, "is_multi_user": false, "is_supervised": true, "language": "zh", "org_magic": "", "profile_name": "Enrollment Profile - MNWF07QD9M", "region": "cn", "skip_setup_items": [ "Accessibility", "ActionButton", "Android", "Appearance", "AppleID", "AppStore", "Biometric", "CameraButton", "DeviceToDeviceMigration", "Diagnostics", "EnableLockdownMode", "FileVault", "iCloudDiagnostics", "iCloudStorage", "iMessageAndFaceTime", "Intelligence", "Keyboard", "MessagingActivationUsingPhoneNumber", "Passcode", "Payment", "Privacy", "Restore", "RestoreCompleted", "Safety", "ScreenTime", "SIMSetup", "Siri", "SoftwareUpdate", "SpokenLanguage", "UpdateCompleted", "WatchMigration", "WebContentFiltering" ], "supervising_host_certs": [], "support_email_address": "", "support_phone_number": "", "url": "https://mdmp.com/mdm/apple/enroll?shopId=1" } We sent a POST request to the /profile endpoint with the above payload, and the response returned the profile_uuid: 605FB5C274303C19189C9B99DCD3280D. 2. Assign the profile We sent a POST request to the /profile/devices endpoint, including the aforementioned profile_uuid and the target devices list in the request body. 3. Scan the device with Apple Configurator 2 We used Apple Configurator 2 to scan and enroll the target device. Issue Encountered After the device restarts twice, it fails to retrieve the mobileconfig file from the URL: https://mdmp.com/mdm/apple/enroll. We are using Nginx as the web server and have enabled access logging, but the logs show no incoming requests from the device to the /mdm/apple/enroll endpoint at all. Could you please help identify where we might have made a mistake in this process?