[SOLVED]unity ads- arent going to show on android device

Hi.
On my pc, i have these "everplay ads examples" showing up when i start my game in unity. Anyway, if i actually build it and run on my android device, i can wait for a hundred of years but no ads will appear.
What to do ? I attached a photo to see that on my pc it works.
I think that i didn't do it well ?
I just add at the beginning of my scripts in the void start that think with "
Advertisement.Initialize ("my gameid");
if(Advertisement.isReady()){ Advertisement.Show(); }
The game id should be between <> ?
I tried another thing then. I added a empty game object and on this game object i added a script in which i initialize the advertisment and i show it. I dont have any error, so, what to do ?
My game is not live yet, but my game id is corect. Any ideas ? Thank you in advance

 

Same here, I can only see Unity Ads on Android phone running Android 5.0+
On older devices say Nexus 7, Nexus S running 4.4, 4.0 - UnityAds is always waiting. IsReady is false always.

Note: I am overriding the native unity main activity.

 

Hi, man. I delete my game from unityads and then i readded it. I change in my script the old id with the new one and now it is working. I observed that i have something like 3-4 videoads per hour.