unity ads always showing test mode

I import unity ads in to my game. now , my game can run ,and can show ads video,but always show the unity test ads, I haven't open the test mode,so I don't know what is the problem

this is the code:

  //on awake fun , init ads 
 Advertisement.Initialize (game_id , false); 
 Advertisement.allowPrecache = true; 
 
 
 //on update fun 
 if(Advertisement.IsReady() && freebtn.interactable == false && videotime > 600) { 
             freebtn.interactable = true; 
 } 
 
  
 //show ads fun
 Advertisement.Show(null, new ShowOptions { 
             resultCallback = result => { 
                PlayVideoSuccess(result );//call back
             } 
 }); 

this is web set