You can set a Default Landing Domain under the Phishing section of your Account Settings to customize the domain displayed when your users reach a landing page after failing a phishing test. Your default landing domain will be used across all phishing tests.

However, you have the option to choose a Landing Domain when editing an email template. A landing domain selected at the template level will override your default landing domain. If you decide to customize the landing domain when editing your email template, you must choose a landing page other than the default landing page in the template editor.

Also, make sure not to choose a different landing page when you set up your phishing campaign. If you do, this will override the template-specific landing page you've already selected.