Damage dealing Display disappeared

Okay so yesterday I managed to see how much damage I was dealing and when I logged back in for some reason I can't see the amount of damage I am dealing any more. The only things that pop up is when they miss me or when the NPC hit me and it will show how much damage they are dealing.

But before I could see me dealing 5000 or 6000 damage for some of my attacks. What happened? Did I hit a key by mistake that made it disappear? I know its not the F11 button since I see everything else and I tested it.

And beyond that I can't set the keys for myself. They come up as blank. For example...kiosk I want to have as F1 and F I want to use as targeting myself for convenience, but I can't set it at all. It appears blank the screen when I enter the settings and when I hit default its the only time it actually displays. But when I try to set the keys and click confirm, nothing happens. It doesn't change. So a bug perhaps or an issue?