Okay so i reserved your name to test and it worked , PLAYLOCK was activated for some reason (now its off) , it should not be the case .. maybe someone had your name reserved and activated the playlock then released it.
Just go there : http://et.trackbase.net/?mod=reserve and copy/past exactly this (your name with the dot etc ) : [WOOD]De4Thiny.
into the field " or the playername (without colortags!)" " ETPLAYER " : [WOOD]De4Thiny.