Chartboost delegate not working on 2nd scene load

So I import Chartboost and it's working in the device it displays ads. But I had a problem when touch goes through impressions so I tried to listen to the correct events and disable touch when an ad is visible. It works the first time but when I reload the scene ads display but events are not working.

I have my scene like this:

-SplashScreen: Here is where I have my Chartboost Gameobject with don't destroy and my Chartboost script with display ads and events.

-Main Menu + Level: First time I load this scene after SplashScreen events work but when I touch a go to main menu button to reload this scene it's not working.

This is how I subcribe/unsubscribe to events:

    void OnEnable(){
         Chartboost.didDismissInterstitial += didDismissInterstitial;
         Chartboost.didCloseInterstitial += didCloseInterstitial;
         Chartboost.didClickInterstitial += didClickInterstitial;
         Chartboost.didDisplayInterstitial += didDisplayInterstitial;
 
 }
 
 
 void didDismissInterstitial(CBLocation location) {
         Input.UseTouch = true;
         Time.timeScale = 1;
         Chartboost.didDismissInterstitial -= didDismissInterstitial;
     }
 
     void didCloseInterstitial(CBLocation location) {
         Input.UseTouch = true;
         Time.timeScale = 1;
         Chartboost.didCloseInterstitial -= didCloseInterstitial;
     }
 
     void didClickInterstitial(CBLocation location) {
         Input.UseTouch = true;
         Time.timeScale = 1;
         Chartboost.didClickInterstitial -= didClickInterstitial;
     }
 
     void didDisplayInterstitial(CBLocation location){
         Input.UseTouch = false;
         Time.timeScale = 0;
         Chartboost.didDisplayInterstitial -= didDisplayInterstitial;
     }