I've tried making test app by using a simple on 'button clicked' event to show Appodeal interstitial. I built it with cocoon io and tested it on both of my mobile and simulator. The interstitial was properly shown, however, after the first interstitial was shown, if I click on the button to show interstitial again, the screen went darker and I couldn't click on anything unless I press the return button on my mobile phone then the dark screen is gone and so I could be able to close the interstitial once again.
How do I get rid of the dark screen that required me to press return button to continue?
If the situation is not unclear I could upload the screenshot of it.