For best compatibility with all versions of Word, use the Legacy Form Field checkbox (Word 2010 menu location shown below), then protect the document for forms:
You'll also get excellent compatibility if you put all your controls on a user form, then use VBA to display that. Here's a 3-part Introduction to User Forms to get you started.
If you're using Content Controls (the ones that are on the main Ribbon, not the in dropdown shown above), those will work with Word 2010, 2013 and 2016 for Windows and 2016 for Mac if you are fully updated (it's a new feature added in the last month, check Word>About Word, you should be on 15.23.2).
As Phillip noted, ActiveX controls from the bottom part of the dropdown will not work on a Mac at all.