Same problem, I'm in Texas. I fail to see how this is a Verizon problem it is Cryptic's software that is not working. This is getting old (3rd time this week).
Between myself and others in my groups I saw this bug 4-5 times yesterday for dungeons. This happens quite frequently after Falvdever dungeons. Sometimes it clears upon re-log but not always.
Stood around for 12minutes for the Faldever crypt in Gauntlgrym with a full group ready to go. It would be interesting to see what the limitation is here as it cannot be people-matching at all. The only thing that comes to mind is that the servers cannot handle the load so the number of instances has been limited to…