The gate was there on Odin too last night, but this morning around 7 am GMT (3 hours ago) I was able to complete the quest instance. There were about 10-20 people near the instance NPC so not very much traffic. I'm guessing it's because the people who stayed up late spamming the NPC had gone to bed and the people who went to bed earlier hadn't woken up yet. Not sure what the situation is like now.
