Global account iOS cloud packaging returns "This service is currently unavailable"

Issue:
iOS cloud packaging cannot create a new packaging job and displays:
"Cloud server returns error: This service is currently unavailable."

Environment:
- HBuilderX: 5.24.2026081301
- macOS: 26.3 (25D125)
- Account region: Global
- Project type: uni-app Vue 3
- AppID: __UNI__G628FBAD
- Platform: iOS App Store
- Time: 2026-08-31 09:00 GMT+7

Steps to reproduce:
1. Sign in to HBuilderX using a verified Global account.
2. Open the uni-app project.
3. Select Build > App-Android/iOS - Cloud Packaging.
4. Select iOS, Release and Standard Mode.
5. Submit the packaging request.

Actual result:
The service returns "This service is currently unavailable."
The HBuilderX log also reports:
- service server return 1002, try relogin
- Cloud server returns error: This service is not available for now.

Additional information:
- Cloud packaging history can be viewed successfully.
- Local project compilation succeeds.
- Password reset and clean Global sign-in were completed.
- The issue occurs in HBuilderX 5.23 and 5.24.
- No VPN or proxy is enabled.
- DCloud upload endpoint is reachable, but service.dcloud.net.cn returns HTTP 503.
- The issue has continued for multiple days.

Please check whether iOS cloud packaging is unavailable or restricted for this Global account/AppID.

Attached is the HBuilderX error screenshot from the latest retry on 31 August 2026.

Start by reproducing the Build > App-Android/iOS - Cloud Packaging flow with a verified Global account, using iOS Release Standard Mode. Inspect the HBuilderX log entries for service server return 1002 and test the service.dcloud.net.cn response alongside the successful history view and local compilation. Done means establishing whether the failure is a service outage or account/AppID restriction and recording the confirmed behavior.

Written by the indexing model from the issue text.