Hi Wasim,
Thank you for bringing your AdColony Mediation error and ad failed to load error to our attention. Ad failed to load with error code 3 means that there's no ad inventory for your ad unit Id in that load request. Error 100 is Missing server parameters for AdColony adaptor - take a look
here. Unfortunately we can only support native implementation of the Mobile Ads SDK into apps in Android, iOS and Unity, and you are using cross platform development. Ad inventory is supported by the
AdMob forum and is out of scope for us. With that being said, you may want to file an issue with KivMob
here.
Kind regards,
Aryeh Baker
Mobile Ads SDK Team

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