Hi Erin, yes there is. It's a support ticket system, not an email address, but there's a team dedicated to answering support questions. Open up a ticket at support.atlassian.com.
Also in general here's the HipChat home page for support:
Earlier this year we made the difficult decision to discontinue our team messaging tools, Stride and Hipchat. The end of life date for Stride and Hipchat Cloud is quickly approaching - February 15, 2...
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