Did you collect 4/4 Seeker Ichor and open the portal to Bastion Nymic yourself both times or did you teleport to somebody who claimed to have already done so and was waiting inside?
Yes, tried all of that had the 4 Ichor still bugged. The only way I could get in without being at the empty area was to breakup the group up and go in by myself then invite back one at a time then port to me at the time of the invite.