Elvui Death Knight Runes

I'm using Elvui on Lordaeron and the DK runes aren't working. When I use a rune it still looks like it is unused. Any tips?

sometimes that happen me to on Icecrown and i am only using x-perl

You can use Yury's RuneDisplay addon, i personally don't use any of them, but i think this might help you out in case you don't find solution for your problem.

Magic runes > everything else