Need to find email address used to setup Atlassian account

[lwoolf2]

Hi Everyone,

I am the Atlassian Administrator for Jira Software, Jira Service Desk & Confluence. 

We need to update our license and I cannot find what email address our account was setup with a few years ago. The people that would know aren't working with us anymore either so I simply have no way to find out.

Is this something I can find in the Administration section of Jira or Confluence and I'm just not seeing it? Or is there a way I can provide someone with my License key or SEN and they can provide me with the associated email address?

Please help :)

Leah