This might help:
"Word for Windows supports controls [fields] that are not supported in the Mac version. There is nothing you can do to change that. In order for forms to work in both Mac & PC the only type of controls used must be what are referred to as Legacy Form Fields,
so the document would have to be redesigned with cross-platform compatibility in mind. Apparently the document uses either Content Controls or ActiveX Controls.
Also, the Windows versions of Word support document protection features that the Mac versions lack. If those features have been used Mac Word will simply see the document as "protected" & not allow any changes whatsoever.
Additionally, not all macros which run on a Windows PC will run on a Mac & vice-versa. It depends on the commands written into the macro & what it is intended to do."
Courtesy of Bob Jones (Cyber Taz)"
Please monitor this thread for suggestions and Possible answers from other more knowledgeable.
__________
Disclaimer: The opinions & replies are solely mine and mine alone, and do not necessarily reflect upon my position as a Community Moderator.