I now see you all were way ahead of me 
mine is online again. after deleting and re adding it
Same here, my gateways are finally back online after deleting and re-adding.
I already gave up on my gateway. I disconnected it and it was in my drawer. Now i came back to check on the forum, and i saw that some of you successfully reclaimed the gateway. So i tried, and now my gateway is working too. Thanks for everybody for the help. 