In the invitation link you received by email:
1.Click Open document if you already have guest access or Sign up if you don't have access yet.
2.Fill out the registration form.
3.Read the terms of the Privacy Policy.
4.Click Register.
5.Check the box to accept the terms of use of the application. For more information, click on the hyperlink Terms of Use.
6.Click Next.
As a result, you will receive a welcome email with a guest login.