The Launchpad is a screen you will see if you have access to multiple accounts linked to the same email address

From the Launchpad, you will see all the accounts you belong to and your assigned role: Account Owner, Super Admin, User, or Viewer displayed on the box.

To access The Launchpad, you'll have to look towards the right-hand side just below your name.

To enter a particular account, simply click on the one you would like to access. You may also use the search bar to find a particular account you have access to.