How Do I Remove The "Guest" Link on My Main Menu?

Plugin: If Menu

These steps require the If Menu plugin.

If you are seeing a "Guest" link on your menu this is because you have not yet configured the menu to hide the "Account" link for users who are not logged into your site. To hide this menu item for logged out users simply:

1
Visit  Appearance ▸  Menus and select the menu assigned to the "Primary" location.
2
Edit the menu link called "{{account}}" and ensure Display Mode is set to "Logged in Users"