Keep dying in Empyrian Well, even with the blessing thing

(Welkin's Reach)

I completed the Bastilles of agility and grabbed the glowy thing (I'm assuming it's a blessing or something- it's the thing that lets you go into the well) in the observatory, but every time I enter the well and try to use my umbrella to move from rock to rock, once I reach a certain height, I immediately die! And on the last time I tried to enter the well, I lost the ability to walk at all. I was incapacitated from my food and health being drained, but helped up by my follower. But now I can't move. All I can do is jump, look around, and use my climbing picks to pull me around. I was initially trying to get to the chest on the highest rock up inside the well before I progress through the rest of the quest.