Need help recovery my phone please

So i know a little here and there about rooting so i decided to give it a go. I downloaded the root file from here...

rootmygalaxy. net/how-to-safely-root-s6-edge-plus/

And as soon as i did this i got stuck on the "kernel is not seandroid enforcing" s6 logo screen and could never get passed it.

So i flashed twrp and wiped everything and tried to install a custom rom via twrp and an otg usb flash drive...

I still get the "kernel is not seandroid enforcing" loading screen.

I then tried to odin 3 different stock files and i get a failed prompt on odin and my phone says

" Sw rev check fail device 2 binary"

I don't know where to go from here. any help would be appreciated .