world 21 wont let me in

ok i was pking last night with a few of my guys (str3ng7h2, iuse3hands, and iuse2hands) and i was not alowed in world 21 for some reason id log onto it and then boom log right back out... i was like wtf? does anyone know how i can fix this? (btw i got 100k in a pk on str3ng7h2!!!!!!!!) f2p rocks lmao