Hello there,
You can easily save your documents as PDF format. Just you need to install Microsoft Office Add-in: Microsoft Save as PDF or XPS. After installing it you will find a option like .pdf in "save as" popup window.
Here you can download it: https://nearfile.com/office_news/2007-microsoft-office-add-in-microsoft-save-as-pdf-or-xps/
Let me know if you can fixed your problem. Thank You.