I had a domain <mycompany>.atlassian.net

[Timothy Smith]

My trial expired, and that Jira instance was deleted, how do I go about reclaiming my company domain?  

I still have admin access without the company name, but when I go to Jira, it tells me an admin needs to approve my access (and I am the admin.)

[Dwight Holman]

As the other posters have suggested you will need to contact Atlassian support for help if you want to reuse a previous instance/site name. 

[Oleksii Melnyk]

Hi @Timothy Smith 
In case of such a problem, I recommend contacting Atlassian support - https://support.atlassian.com/contact/#/

[Timothy Smith]

Support leads me back to here to community support, not to any way to contact an actual person or way to contact Atlassian.  It's a catch 22.   Zero support until you are on a paid license with support, including this.

[Oleksii Melnyk]

@Timothy Smith do you have org admin role?

[Timothy Smith]

Yes.  

[Oleksii Melnyk]

@Timothy Smith If you don't see your site anymore in https://admin.atlassian.com/, create a new one and ask support to move the domain to it. This helped me at one time