There are many SCN Moderators that constantly review new content published on SCN
The idea is to filter non-relevant content or duplications of the same issues.
If you've posted something on SCN but it was not published
See example:
This is how you can verify if/why it was rejected by moderator:
Click on Action button on the upper right corner
Select the 'Notifications' tab and review the notifications
It might be also wise to check the Rules of Engagement