Set your password from the welcome email; resend it if needed.
When you sign up, we email you a one-time link to set your password. Use it once, then sign in with your email and password from then on.
Lost the email or the link expired? On the sign-in page, use Resend my setup link and enter the email you signed up with. Forgot your password later? Use the password reset option on the sign-in page.
Related: Contacting support