Hi 
Tbh i am not sure. The 4.3.0 made it easier to cope with comments on
slide-shows (i think) but i'm not sure if that would help with comments
from Word.
Which format do they use? Is is DocX or the older Doc? If it's DocX then
do you know what version of MS Office they need you to use to be compatible
with them? A clue might be if you are already using a version of MS
Office. Do you know which one you are using? Is it MS Office 2007 or an
earlier one? If it's earlier then they are being sensible enough to use
the older Doc format and that should be working just fine on LibreOffice.
The DocX keeps changing all the time so probably other people would be
having the same problem as you, or different problems.
It's funny how they seem to insist on you buying a program that only runs
on 1 or 2 platforms and that costs money to buy but wont consider using
something that can be used for free on nearly any platform! I wonder if
they have thought about it or are just happy to squander money without
thinking about it.
Regards from
Tom 