How to pass the quest for the crown of immortality? (The Elder Scrolls 5: Skyrim)

What kind of crown is that?

on the pages of the mod it is written that you need to carefully read all the notes that relate to the quest, since there are no entries in the diary or marks on the map. go
for it "Finding everything you need in this quest mod is not easy - there are no quest entries and no compass arrows. All information is collected from letters and notes, you need to read them carefully, each of them has an indication of what, where and how to look for.
The crown itself does not grant invulnerability, it simply resurrects its owner after death, while absorbing the dragon's soul each time."

who passed it? I only found blood, a tomb, and a bloody source

Dhoine N.
crown of immortality

AleXStein
and you passed the quest

I went through everything