I think it is important to make it easy to monetise apps. It is essential to have Chartboost for Android and Ios.
We're a small team and unfortunately we don't have the resources to create official addons for all the innumerable services that Construct could potentially integrate with. The small number of services we do cover already have ended up consuming a significant amount of our developer time as it is. You should ask the service to create their own addon using our SDK, or contact a third-party developer.