DPA signature

Hi,

I just downloaded dpa.pdf from here: https://www.wordfence.com/help/general-data-protection-regulation/#data-processing-agreement

When I open the file in Adobe Acrobat Reader DC, it tells me “Signed and all signatures are valid” before I’ve actually signed anything. When I go to the panel where I would have to sign and click “Fill & Sign”, it doesn’t show me any of the usual tool icons and I cannot type or draw anything.

Help?