I have made a fillable PDF form but, when I try to send for signature, it says it can't send because it is an "Unsupported File type". It gives no guidance at all about what is supported and what is not. i would have thought a PDF form made in Acrobat DC should be automatically supported.
I can't find any useful guidance on this on the web.
What goes on?
I had same issue...went to document properties and removed the security password and it worked...
I am not seeing an option within Document properties to do this, is the fact that the document is certified change anything?