Issue Saving File

Every time I try and save a file this pops up

This Document restricts some adobe acrobat features to allow for extended features in adobe acrobat reader

To create a copy of the document that is not restricted (and has no extended feature in adobe acrobat reader)       (click save copy)

I would like to be able to save without saving as a copy because when I do I could no longer fill in or comment. Is there a way to override this?

I download the file to adobe acrobat reader DC and fill it in fine but have trouble saving it.

Please help