PDF Forms Filler cant transfer signatures

I have a pdf that usually i print out and new recruits print name, date and sign each page. Looking to go paperless so i built a wordpress site, got the wpforms plugin, and the signature addon for wpforms, and then got pdf forms filler plugin to transfer the data to the pdf that i need filling out.

Everything works like a dream and transfers…….apart from the signature.

I’ve tried setting the field on the pdf as a text field, an image field and a signature field, and it just will not transfer the signature.

Any ideas?