How can I change my Hosted Hub URL?
You can change the URL of your Hosted Hub via the Settings Section of MyMalcolm. Go to Custom Domains and you choose a new URL on malcolm.support or malcolm.app here. The URL must be available ie not being used by another customer.
You can also configure your own external domain or sub domain in this area as well.
If you want to change the part of the URL after your domain please see this article.