SuperSU still needs SuperUser permission to run, but follow the below, and I will get your Root back.
This is an easy fix... Go into the first SuperUser app that you have the one with Android with the "eye patch", then slide the screen to the left,> look for the "su binary v1.xx:SUPERSU" below that tap the screen on "tap to check for updates" this is updating the binaries. If this goes through and you receive a message at the bottom of the screen says something like, "that was cool do it again." Then success and you have root.
If you receive an error and will not go through, download this app
SuperUser Update Fixer , then run this app, So you are aware this app will not work, it will remove the bad installation of SuperUser, then go into the playstore or download this link for
SuperUser, which go ahead and install it, open it slide the screen to the left and update the binaries, which this is the "tap to check for updates", approve whatever pop-ups and you should see the, "that was cool do it again" message (of course no need to do that as Root is back in order.) Then you can setup SuperSU, click the continue option. I also suggest installing a copy of Busybox it works nicely with SuperUser and SuperSU,
here is the link for Busybox.