Can I change my site's vanity URL (subdomain)?

Yes, the subdomain (vanity URL) of your site can be updated, although the actual change will need to be made from the Recurly backend. Please have an Admin User reach out to our support team by email or via live chat in the web console, to request that the change be made. The change will be effected immediately upon receipt of the request, and you will want to ensure that you are ready to update your API Authentication to use the new subdomain value that is used.