When you first download and install Muse, you are required to create an Adobe ID. If you have previously created an Adobe ID (on www.adobe.com to access other Adobe services), you can use the same password with your Muse account. The following screenshot shows a Sign In window.
If you purchased a subscription with Adobe Creative Cloud, you'll use the same password to log into Muse when you first install it.
If you previously created a Business Catalyst account and used the same login email to create your Adobe ID, the system will detect that the e-mail address you entered matches a record in the Business Catalyst database.
Whichever way you first set up your ID, you will need to know that username and password when it comes to publishing your site.