Running in to the same issue yet. Cannot log in on Hyperion. Tried transferring to Lamia, and could not log in. Transferred to Aether (Cactaur) and was able to log in.

Tried restarting the game, my computer, my router, and my modem, all to no avail.

Data Center: Primal
World: Hyperion
Character: Morathyn Molkot