I think there are some bugs with that one. One issue seems to be that if you're logged in at the time the day resets, you can't claim it for that day. Other than that issue, it's working for me though so not sure what else might be going on.
There is a known bug with the daily login. If you are logged in when the server reset takes place (10 eastern), the fact that you are already logged in doesn't count for reward, but blocks you from obtaining it that day.
Since the old daily login rewards were not setup that way, it appears that the new code is looking at a different timer and not taking into account status at reset. So we will have to wait for a code fix and update/incremental patch before it starts working properly.
This really screws anyone playing outside work hours in EU, along with anyone on this side of the pond who logs in for a quick quest or daily before leaving for work.