Why Didn't the Landing Domain I Selected Appear in My Phishing Campaign?
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 the landing domain for this template 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.