That happened to me when I first subbed on the XBone. I think it may just take some time to happen. If it takes days, I would put in a ticket they should resolve it soon (ha ha). They were timely with my ticket anyway.
You may not see your crowns for a week or two. No idea why it happens but, never fail, every month my sub gets renewed and then a week and a half later I get my crowns. *shrug*