Hi @shen chao , welcome to the Atlassian Community and thanks for your post.
I don't see anything on https://confluence.status.atlassian.com/ so you will need to open a ticket to the service desk for this https://support.atlassian.com/contact/ .
Best wishes
What does it mean?
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@shen chao You'll want to click where it says, "contact support" and follow the prompts there to open a ticket with Atlassian Directly.
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