Lost root trying to get Android Pay

I tried turning off\disabling root to get Android Pay to work and now I can't get root back.

Whenever I open SuperSU it just says the binaries are missing. I've tried flashing the SuperSU zip in the recovery, but it still just says the binaries are missing.

I've also tried uninstalling SuperSU from the Play Store, and it just removes the latest update, doesn't actually uninstall it.


Ideas?