Error code 404 is a page that can not be found. Most of the time this is because you clicked a link that is not active. The is mots likely one of the following things:
- You have received a reminder regarding your casefile. When a reminder is sent out the former link is deactivated.
- The link you have received have been deactivated by the sender.
- See if you can find a reminder email in you inbox, and use the link in that email instead.
- Contact the sender and ask them to resend the signing request. You can find contact information for the sender in the bottom of the the email you have received.