NOT_READY - Placement Interstitial_Android is not ready

Unity ad is not showing. It says “Placement ad is not ready”. Where do I get the placement option?
Unity version: 2020.3.17f1 LTS
Unity Ad version: 4.0.1

Hi,

May you provide your game id and the placement id you are using? Also, please provide the sample codes used for UnityAds. I will check them for you.

Please remember to load the ads first and show them when ready.