It sounds like you may have signed up using a different email (or potentially mistyped your email when signing up). One option to figure it out is to search your mail application for emails from HipChat and see what email they're addressed to.
If you continue to have problems, I'd suggest you contact support by going to https://support.atlassian.com/servicedesk/customer/portal/32. They should be able to help you figure out your issue. Having the name of the subdomain you created when signing up will also help them narrow things down for you.
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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