Add password unset information

Explain the cause of a password unset in a situation where both social/password based login is set up

@alxchalkias is there a "why" we might want to provide here?

Author: shainaraskas

cloud-account/add-a-login-method.md

@@ -19,6 +19,10 @@ When you create your account, you can choose one of the the following methods to
 
 After your account is created, you and can an additional login method. You can’t remove a login method after it’s added.
 
+:::{caution}
+When you have both a password-based login and a social login like Google or Microsoft set up, logging in with Google or Microsoft will unset your password-based login password. The next time you use password-based login, you'll be forced to reset your password.
+:::
+
 ## Enable password-based login [ec_enable_password_based_login]
 
 To enable password-based login in addition to Google or Microsoft sign-in, go to the [Forgot password](https://cloud.elastic.co/forgot) page and enter your email address. This will trigger the forgot password flow and will allow you to create a password for your account.