THE DOMAIN IS REGISTERED AT BACAN
In that case, the solution is simple. Submit a support ticket from your client area, and we'll update the domain administrator's email shortly.
THE DOMAIN IS REGISTERED WITH ANOTHER PROVIDER
In that case, you need to contact the company that sold you the domain and ask them to update it. This change is essential so that your domain always belongs to you and you don't have any surprises. It's also essential when transferring a domain to Bacan from another provider. Updating the administrator email should only take a few minutes, so it should be a straightforward process with any provider in the world.