Signed-in users can also find this guide, with screenshots, under Help in the app.
If you can't remember your password, you can set a new one from the sign-in page. You need access to your email.
On the Sign in page, select Forgot your password?
On the Reset your password page, type your Email and select Send reset link.
A message confirms the email is on its way. Open the email and select the link. The link works for 1 hour.
On the Choose a new password page, type your New password (at least 10 characters) and type it again in Confirm password.
Select Set new password. You see Your password was changed. Other devices have been signed out.
Select Sign in and sign in with your new password.