Can't acces or find BOOTCAMP drive in mac El Capitan
I know this is an old thread, but I had this issue too...  

It turns out, the disk was in hibernation mode, and Paragon may have been responsible.  In the System Preferences pane, go to Paragon NTFS, Volumes Tab, and check the box (Bottom left) that reads : "Disable Paragon NTFS for Mac".  This is what worked for me.

Also, on startup you may get a Paragon notification that says the disk is in hibernation.  Click on that notification before it disappears and another dialogue box will come up that lets you force a mounting of the disk.  This warns you that you will loose temp info from hibernation mode (which is not a big deal).  This is another way to potentially fix it.