The most common reason this happens is because your email client auto-corrected the "To" field in your email to our support email address.
Please try again and be sure that you entered sign@hellosign.com (not support@hellosign.com) in the "To" field and that you've properly typed the unique subject code shown to you on the "Edit signature" screen in your Dropbox Sign account.
If your mobile signature still doesn't appear, please click the Contact button at the bottom of the Dropbox Sign page, or the Help button if you're logged in to your Dropbox Sign account, and send us a message about what happened step by step.
If an error occurred, please include the error code if one is listed. Don't forget to select A Technical Issue under Reason for Ticket, and enter the email address you use to log in to your Dropbox Sign account, and our Support Team will investigate.
