Hello
We can resolve this issue,As google update there in app purchase libraries so we have to required,As we review there are no any specific reason behind you get message.
But we are sure we can fix your issue,You can hire us once your app is live and user with happy with inapp purchase,We are not looking for money or one project but we want to increase our business relations with you for a long time. Thus, your hiring process will create extra credit on our future.
Thanks
Ngendev Technolabs