Hi Party
I just googled that software asking if it was OK and the responses were mostly that it didn't seem to do any harm but the stuff it found didn't really affect the PC anyway.
And to top it off if you want to get rid of what it found you need to front up with some dough.
Just google "is fixmypc safe to use" and have a look for yourself.
Best of luck but I wouldn't be touching it myself.