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changing URL address name is no available
can you help me to change it?
Welcome to the Atlassian Community!
I am sorry, but your question is not clear. What "URL name" are you looking to change? The base URL of the system (in general admin) or the URL the service resolves to (which you would have to change in your networking settings)
Or have you mis-labelled this question with "server" when you are on Cloud and you are looking at the site URL?