I am afraid we are not your administrators, we're a community of people with an interest in Atlassian stuff (usually because we use it). Your admins might be here, but there's no guarantee they'll see your question. The rest of us have less knowledge of your system and less access than you do!
You'll need to contact your administrators somehow. If you don't know who they are, I would talk to the people around you - the team that you're working with on this Jira, the person who granted you the access in the first place, the person who asked you to use that Jira, and so-on.
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