Weird typing issues and invalid target issues

I logged in to play today but I can only cast healing spells on my priest. When I try to cast damaging spells on mobs it says "Invalid Target". I've disabled all my addons. When I login it says unknown macro option: self. I tried to open a GM ticket but when I type anything after a vowel, it deletes everything I wrote before the vowel. I've disabled all my addons and it does this weird text deletion thing with all my toons.

What do I do to fix it?