Hi there,
Thank you for writing this to us. Let me see what I can do to assist you with this.
As for your question with regard to custom creative template, you may see to this sample app as a reference. As for the no fill error you've encountered, this signifies that your ad request was successful; however, there is no available ad as of the moment. This is purely an ad serving issue and isn't controlled by the Mobile Ads SDK. That said, I recommend that you reach out to our Product Support Team so they could address your ad serving concerns.
Regards,
Mark Albios
Mobile Ads SDK Team
Hi Shashank,
Thank you getting back to me and for sharing the additional information in private.
I will raise this to the team and get back to you for any updates.
Regards,
Mark Albios
Mobile Ads SDK Team