Unfortunately, it sounds like you've got malware on your computer. This is not a Ringorang app issue, but since the app accesses your browser it will, by default, be virtually tied to any malware on your PC and thus make it seem like the Ringorang app is causing the trouble. 

First, if you force the app to stop (shutdown - not just close/shrink the app) and restart the app, this may temporarily (sometimes permanently) hide the problem from repeating in the Ringorang app. Before you shutdown the app, be sure to logout as well to allow you to signin again to the app after you restart the app. 

We recommend you follow the steps outlined in this link: https://malwaretips.com/blogs/remove-dotdo-audio-ads/