Hi there and welcome
In word, switch the view to Print Layout or Web Layout and you should then see the comments.
Let me know please how you go.
Can you attach the file to this question please and I can see the issue.
There are only 3 comments in the entire document, page 2 and page 6.
How many do you see?
You had the font size for it set to 1px under manage styles, I set it correctly here
If you would like any additional information or assistance, please do not hesitate to let me know.
And if you can take a second to rate my service by clicking one of the stars at the top of the screen then submit, that would be greatly appreciated.