Can't go in party portals.

Anyone know exactly what quests need to be done to be able to use peoples portals? Is it also tied into Clvl? I have a lvl30 that does Baal runs (but has never killed him) and he still cannot go into any arcane, or durance/throne portals (unless I make them). I have the wps so what I end up doing is walking and taking way too long to catch up to the party. What makes it even worse is when I die and I didn't make a portal I have to walk my naked ass all the way hopeing I dont get killed by any stray monsters on the way.

Help