I have played multiple times to upgrade all 3 items for the season 3 dark aether portal and the triangles are all on the ground but no purple lines lit up anywhere (i have all 3 items in my rucksack ready to upgrade) but none of the 3 ruins show up for me to shoot. Even if i go to the spot where it lines up the triangle i cant summon anything (assuming because the triangle is not lit up from shooting the ruins) I'm sure this has been asked a million times but im at a loss? I play with my sister who has not finished the act 4 mission but im under the impression that does not matter as long as you have all 3 items ready to upgrade in your rucksack.