So you're saying you're using Word 2010 and have no problem with files created recently? I find it surprising that modern word .docx is compatible with 15 year old Word
The modern Word suite’s basic format was introduced with Word 2010. So as long as the person who created the doc uses features that were previously present in Word 2010 they’d be fine.
Features from later versions will either not show up or show up as boxes
