Guild Hideout disappeared

I was in a map with my wife, and when we went to leave we port out of the map and back to our guild hideout. We got an error that said "unable to create any instances". We had logged out and back in, and were in the Ziggurat Encampment. We noticed at that point, the icon on the right of the map to port to our hideout disappeared. It's been several days now and it still hasn't come back, so we're unable to use our guild hideout.