Revisit Resume

For this assignment a website was given http://rezscore.com/ to score my resume.  It was quite simple, to upload and see the results in seconds. At first, I was a bit skeptic on how this would work and what the website was looking for. But after my results of a "B-" I no longer had any doubts, knowing that they approved my work.
Using the snipping tool again, below is my previous score of my resume that was given.

It seems that my resume was not too long, and was to the point of my accomplishments and work experiences.

The website however noted: "Don't use first person language"
I reviewed my resume and only counted 6 "I's" relating to first person language.

After redoing my resume, and replacing the wording of my "first person language" my score did not change when reloading it into the website. Again, I wonder how accurate this website is after changing a few problems that do not seem that apparent the average person.