Activate old character

I have an old character from my first account I would like to recover (the dimension is down): nobutora, level 20 barbarian. How do I do that?

/petition and wait. It may take 30 days or more.

lvl20? I think you’re wasting your time… it’s gonna take you half a day to get to lvl20, why wait for petition? It’s your decision but I wouldn’t wait for FC.

If the character is only level 20 I would also just forget about it and start over as Nbnion is saying here.