Why is NA only facing this problem though.
Purely speculations, but there are a number of reasons:
1. NA may have more licit activity than other servers. Hard to confirm, but hackers can cause server issues due to the nature of the packets that they send. As mentioned by Gameforge, it appeared as though they were suffering for DDOS attacks. This points towards the most likely culprit being hackers.
2. Gameforge is an EU based publisher. I can't confirm if Gameforge has ever published a title to the west until now. Lack of experience or resources dedicated to a region that isn't normally serviced isn't an uncommon practice. This is unlikely as I'm sure Gameforge with the amount of titles they've published in the past, saw NA as pretty sizable audience. There's hardly a chance that they'd decide to publish this game to us and decide to cheapen out.
3. Bad luck. Murphy's law, sometimes s*** just happens. It may just be coincidence that the NA server went out three times so far in the past couple days.

