@holger1405 Hello,
I tried it at home and on my Smartphone while not in WLAN.
After I did all you suggested I got to the site.
n7hq.masseffect.com
and it looked fine as it was.
But then I tried to log in.
As usual I was redirected to EA and entered my Email and Pw, but then when I should get back to "n7hq" , I got the error message once more.
"http error 500"
I have no idea what I did wrong.
It worked the past three days.
Btw I used n7hq to raise the readyness rating in ME3, because none I know has mass effect 3 and multiplayer is impossible alone...
Thank you, for your effort. 🙂