Is there any way to tell Defraggler that my 960 Pro is an SSD, not an HDD?
This is a known issue and it looks like they're not going to fix anytime soon (considering they only update this program one or twice a year).
I reported this same issue a few months ago: https://forum.piriform.com/index.php?showtopic=46938&do=findComment&comment=277268 and still no fix, so good luck.