Can’t add digital signature in Acrobat — signature option greyed out

Hi everyone,

I’m facing an issue with Adobe Acrobat while trying to digitally sign a PDF. The “Fill & Sign” tool opens fine, but the option to add my digital signature is greyed out. This happens even on documents that are not password-protected or restricted.

I already tried checking the document properties, enabling permissions, and even creating a new digital ID, but the problem remains. I need to send signed PDFs to clients, and not being able to add a signature is becoming a big problem.

Has anyone else experienced this? Is it related to document security settings, or something to do with Acrobat’s configuration? Any suggestions for reliable fixes would be appreciated.

Thanks!