License already in use?

We just migrated from an AWS server to a company DMZ-hosted server. When the server was at AWS we logged in to administer it at the external domain (say, company.com). Now that it’s in the DMZ we are logging in via the internal domain (say, server.dmz) and are blocking access to the admin pages from the company.com domain at the firewall.

I logged in to the site via the server.dmz domain and moved the Wordfence key to the new server. When I did that, Wordfence generated a message indicating that the key is registered to the company.com domain, and now shows “License already in use” as the status. And it’s not letting me manage any of the Premium features, even though a number of them (the ones that were already set prior to migrating) are configured and appear to be functional.

This is perhaps complicated by the fact that while I have the key, I do not have access to the Wordfence Account that was used to create it; the person who created it has left the company and we can’t find any records on it. How do I get Wordfence to recognize that the key is valid and apply its rules to the company.com site traffic? Can I get a new key if I can’t get into the Account that was used to create it? If I do get a new key and install it from the server.dmz login, will the rules apply to the traffic coming from company.com?