NPCs, Great Vault, Etc. Aren't Showing - HELP!

I just started playing about a month ago.

As of yesterday, NPCs stopped showing up, Auctioneers don’t show up, I can’t turn in quests because there is nobody there. The portals do not show up.
I have tried /reload, restarting my computer, uninstalling and re-installing the game, and everything. I’ve reported it as a bug, then get the automated response that they didn’t find anything out of the ordinary and nothing is wrong.

I can’t progress in the game, if I can’t turn in quests or collect gear from the Great Vault… very frustrating.

All I can see are other players.