So I have just made a twilight portal at 160y on my sky island. When I enter the portal again from the other side, I pop up at another portal at the same x and z coordinates but at 117y (the ground under my island). I tried destroying that portal, making the portal in the twilight at 160y, but I still created a new portal at ground level and cannot get a portal in the twilight to link to my portal on the island. Solutions?