FMath Inc is a Montreal based company specialized in implementation of MathML for Web. We develop professional components to display and edit equations on web.
Install the default version. All functionalities are there to be tested. Only the watermark will make the difference between a professional paid version and a professional trial version
Install the updates for Office and test again.
If still not working, let us know (firstname.lastname@example.org). We will try to help you with installations or other inconvenient (bugs, missing or "not so easy" features)