What chests have you opened?
The chests needed for this quests are tied to one of the following Dreaming City triumphs and are found in various location through-out the Dreaming City
[b]Hidden Riches[/b] - Curse at its weakest
[b]Bolder Fortunes[/b] - Curse growing in strength
[b]War Chests[/b] - Curse at its strongest
Given that this week the curse is at its weakest - here's a good guide on finding these chests
[url]https://youtu.be/Y9ldX9LIvUc?feature=shared[/url]
You have opened Ascendant CHALLENGE chests, not Ascendant chests.
Here's what you need to do: [url]https://www.shacknews.com/article/107374/all-ascendant-chests-in-the-dreaming-city-in-destiny-2[/url]