@Le Nhat Minh Tran
Thank you for your post!
When it comes to reactivating your subscription, I'd follow our Reactivate a disabled Azure subscription documentation for more info. Additionally, if you're still having issues, I'd recommend creating a Subscription Management support request, so you can work with our subscriptions team to get this issue resolved.
If you have any other questions, please let me know.
Thank you for your time and patience throughout this issue.
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