When creating a custom report in Microsoft Word, there are a few specific limitations for you to consider. Please reference the following list if you run into any issues:
Word reports cannot be viewed in the mobile app
Word 2010 or later is required if you want to edit subform or repeating section tables in your custom Word template
No subforms can be contained within repeating sections or repeating sections within subforms
Field keys cannot be put in headers or footers
There is currently no way to auto-convert a custom Word template to a PDF
Word 2016 or later is required for displaying Dynamic Checkboxes
Dynamic Checkboxes do not work when they are within a subform
Dynamic Checkboxes do not work when they are within a repeating section
Video, Audio, and Document Viewer fields are not supported