Why isn’t electronic signature working for a document?

To sign your document, it is imperative that you read it and scroll down through the entire page.
Check that the mobile phone number used to sign your document has been entered correctly. To do this, contact your Agent.
You may be trying to sign a document that has passed its validity date (signature deadline). In that case, please contact your Agent.
If, despite these checks, you still can’t sign your document electronically, please contact your Agent.