BTW: After some more testing I can confirm the listener code is not reached often. But when I do a restart of the app (instead trying to init and init again from inside the code) often the listener can get reached and ads be loaded BUT only the banner ad can be shown.
Calling kidoz.show (“interstitial”) and rewardedVideo is not showing anything on screen!
I have reached out to Kidoz and the told me their testing is working fine, so probably it is something connected to Corona.
So long story short: Banner ads are working on iOS but interstitial ads and rewardedVideo ads can not be shown on screen!