Get a better connection or don't camp the play button, because you know that it won't update if you're still sitting at the play screen when maintenance ends..right? There's only "one" server right? There's no JP/NA/EU servers, it's all universal..so they can't log in before you unless you're on a slower connection or didn't allow the play button to refresh.
As for a 'backdoor' That's slightly impossible, because you can't get online if the servers are offline, so a backdoor would be useless till servers come up, and once they're up everyone is able to log in.
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