Having the same issue. "Unable to select Hyperion as a destination for Return to Home World requests at this time." and also cannot log into the world they are currently visiting due to congestion (Error 3088).

The inability to return home message sounds like it's related to the server congestion status (set by the dev team) instead of actual traffic. The queue to log into Hyperion right now is 38 when I tried with another character, so it's either not reading the congestion the same way as it does for queuing or there's some delay on the status updating.

I would really, really like the ability to play the game as this character. Ideally by being able to return to my home world, but if I could at least queue into the world I'm visiting that would be okay for now until the returning issue is resolved.