We have a legal document that has "restrict editing", "tracked changes" only turned on and it works for most everyone (they can edit the doc and changes are tracked) but for one individual, they are not able to make any changes whatsoever to the doc.

Any ideas why this is happening?

Are there previous versions of MS Word that are incompatible that could be causing this problem? We dont yet know what version of Word this person is running but we are all running 2016 on MS365.

Thanks in advance for your help!