OnUnityAdsDidFinish() repeats when I restart the game

When OnUnityAdsDidFinish () starts, it works, but when I restart the game (load the same scene again), **I don't know why, but (when the ad ends) OnUnityAdsDidFinish (), it starts twice.** If I restart the game again, the OnUnityAdsDidFinish (). Start three times! Help. ---------- (parameters >> placementId = SkinAdd_Android && showResult = ShowResult.Finished) *OnUnityAdsDidFinish() code:* public void OnUnityAdsDidFinish(string placementId, ShowResult showResult) { if (placementId == "SkinAdd_Android") { if (showResult == ShowResult.Finished) { menu.SkinFinished(); } }else if (placementId == "Continue_Android") { if (showResult == ShowResult.Finished) { menu.ContinueFinished(); }else if (showResult == ShowResult.Skipped) { menu.ContinueSkipped(); } } }