Man, all you need to do now, is just log in (on all chars) and you're safe.
Only characters that did not log in for a long period of time (maybe 1 year I don't know, Zeox will decide later) will be removed, that's it. :)
You are already safe anyways, because you have been here before the ban, which is less than a year, maybe 2 months? when you were banned?
Zeox will decide which chars will get erased, 6 months or a year I have no idea.