Can anyone help?

I've always used this defraggler and never had a problem but it's been a while since I've used it. Now when I start running it it goes to a certain % and stays there. It keeps running and running going nowhere. I uninstalled it then reinstalled it like 5 times already. I just don't know what to do. Can someone help?

Please provide more information

What Windows version?

What version number of Defraggler, and did you recently update it previous to the issue beginning?