Why is the statistics showing incorrect information?
Browser used for Last Visit
Mozilla/5.0 (Windows NT 6.1; WOW64; Trident/7.0; rv:11.0) like Gecko/20100101 Firefox/12.
What you are seeing is the User Agent String that identifies Internet Explorer 11. IE has historically identified itself as "Mozilla" for reasons explained in this article:
You can copy/paste a User Agent Sting into this analyzer to identify the browser and see an explanation of each part of the string: