Here we are a user community populated mostly by customers of Atlassian, like you. We don't have any access to your account or subscriptions to help you directly. We can offer advice, though.
Were you using a Free subscription? When was the last time you accessed the data successfully?
If you were using a free subscription, Atlassian has a policy about deactivating Free subscriptions that are left inactive. You can find complete details about this in these articles that I wrote:
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