I needed 9 points to get this signet, I have 10. The icon in the middle of the main circle shows a Moa head and says "signet of Humility" and it doesn't matter how many times I click on Signet of Midnight it won't change that middle icon. I was waiting till I reached level 19 when my 4th right hand slot opened up thinking it would work then, but it hasn't. I think it's a bug, but not sure, I may be missing something.