Sponsored development account with a published app is deleted?

Hi Zendesk team!

We've been developing apps for Zendesk Support some time ago, apps are published in the marketplace:

https://www.zendesk.com/marketplace/apps/support/181725/alterra-answers/?queryID=a1607ed2f62046bf52c2f4dc9bced006

https://www.zendesk.com/marketplace/apps/support/219749/alterra-help-center-search/?queryID=b39f7c5c42872d191442aebecf3ce9f3

They're installable and working, the globalized OAuth seem to be OK too.

But when I try to log in to the development account we used to publish those apps, there's none of it!

Also, the ticket created under support.zendesk.com (with this account I'm writing right now) when globalizing OAuth is also not available (https://support.zendesk.com/hc/requests/3825725).

Is there any way we can recover the development account d3v-alterra.zendesk.com?

Thank you.