You need to go into ads manager to see the actual status of the ad you created.
If you are logged in the links in these articles will take you exactly where you need to go.
Creating an ad, this will take you to ads manager to see that status metrics:
https://www.facebook.com/business/help/180704006007059?id=150605362430228
What to do if ad rejected:
https://www.facebook.com/business/help/1210227555661027
Once you know the exact reason for rejection then you can appeal or make the required updates.