i have the ‘no time to let the blood dry’ achievement but it didnt’ count to my sprinter conquest and i don’t know what i did wrong
You do understand the the Sprinter Conquest requires you to play through the entire main storyline in Campaign Mode from Act I through Act V in under 1 hour, right? It does not mean to complete all the Bounties for Act I through Act V in Adventure Mode.
The timer starts the moment you click Resume Game or Start Game.

Here’s a video of a solo Monk completing it in Season 21:
At this point, it feels like the real bug is the conquest description:
Considering the amount of people misunderstanding what to do, it ought to be “Complete all five acts in Campaign Mode at max level within 1 hour of the start of the game” or something similar.
No the real “bug” is that people just can’t comprehend or do basic problem solving. This is pure PEBKAC.
It is not a comprehension problem.
The conquest description says to complete acts 1-5 in under an hour. It does not specify what is supposed to be completed in the acts.
I think the description is misleading since practically the only thing that people do in the acts is bounties, and completing the bounties in under an hour fits within the description of the conquest.
But I agree with you on the problem solving part. Everyone seems to jump to the conclusion that the game is broken instead of actually looking up the conquest first to see what is required.