Can't editing PDF text-no system font error

Hi all,

I'm trying to edit a PDF containing "Arial+0" font. This is the original font and the editing font. There is no system font for this, so I am unable to edit or delete text.

I attempted one solutioon to edit the TouchUp Properties for highlighted text, changing the font to something my system has.  However, when I tried changing the font to "Arial", I got the following error:

The change to a different font was not done because the chosen font and the font encodings in the document differ and could not be resolved.

Is there a way around this error?  Any other approaches to try?

Thanks!