I see they did that, but honestly it's not even the end of the world. You can't get more than one month so all it really benefits are people that don't log in every day :P
The daily reward was duping, today's was a 150%xp scroll, I logged on, grabbed the daily then went through my routine, I went to Bal Foyen to gather jewelry seams and noticed a notification, when I got back to Stonefalls I saw that the daily was there, at first I thought I'd forgotten it, I'm getting on in years and a bit forgetful so I took it again. I went to Dragonguard isle to get the daily box and saw the notification again, opened and took the reward then checked in my inventory to see 3 scrolls. While doing so I noted people standing at the wayshrines, opening the store, then going through, a few minutes later coming back and doing all the same again.
The maintenance on September 7th is now completed and the issues affecting daily logins and endeavors are now resolved. We are going to close this discussion since these issues should no longer be happening after the recent fix. For further details please see our thread here.