Alright, that is the correct forum. So, I suggest, you just post the challenge again.
But, I also suggest that you make your challenge detailed, as in, give an idea what you are looking for, pairings you prefer, some idea for a plot (if you want that), what things you would like to see in the story, and what you do not want to see.
Just the title of your challenge and then a "Yeah, want to see that"-post, is not a challenge, and that kind of post is very likely to get reported and deleted. Give details and plot ideas, that's more likely to get you some response. Bear in mind though, challenges may take some time to get picked up, and please, read the rules at the top of the Challenge forums before posting.
Good luck and happy reading.