Banner Problem

Hi to everyone, i have a little big problem, i implemented a simple banner… in test mode everything work well but when i put testMode false, banner dont show but every other ads work just well.

void Start()
    {       Advertisement.Banner.SetPosition(BannerPosition.BOTTOM_CENTER);
        StartCoroutine(ShowBannerWhenReady());
    }
IEnumerator ShowBannerWhenReady()
    {
        while (!Advertisement.IsReady(placementId))
        {
            yield return new WaitForSeconds(0.5f);
        }
        //Advertisement.Banner.Show(placementId);

    }
    public static void showBanner()
    {
        if (Advertisement.IsReady(placementId))
            Advertisement.Banner.Show(placementId);
    }

Advertsement is instanciated at game start. I call showBanner when i want to show my banner xD
Thanks you

@Spumiglio

It could be that there are no banner ads available to show at that time. You can use the OnBannerError callback to check this.

I posted an example in this thread: