So many sites have previews called teasers... and there are definitely novel teasers like the one in this thread.
The current working theories by Runsing and Westeller are based on the information that both submissions happened to post on the same day. There is a sort of safety setting on NU side that prevents the same chapter number from getting accepted on the date and would not allow the chapter number to be confirmed. A mod trying to approve chapters submitted on the same day likely thought it was a (1) double submission, (2) not a full chapter due to the teaser label, or (3) a collaboration between groups which both host the chapter (this is a really common occurrence actually, and we only link a single group). It being deleted later is possible, but unlikely.
@flowingcloud Did you submit just the novel or the novel and the chapter? Can you submit the chapter again with the date set a day before or a day after? Getting confirmation on the why will have to wait for our admin, but we can fix the now. ^_^
I’ll try to change or sort the date to July 3rd, but it may temporarily not show as such.