Upgrade Word or Office. 12.3.6 is current.
If you run into font problems,
Font problems can be resolved using a font utility such as Font Book. Use Font Book (it’s in Applications > Utilities folder) or other font utility to validate ALL your fonts. Delete old versions of duplicate fonts. Delete fonts that don't validate completely. Restart your Mac and empty the trash to get rid of the unneeded fonts and free up disc space.