Hi Shirley, we are having the similar issue like you. Can you please tell where to change that price? We set monthly subscription with a one-month free trial, but the app is now asking for one-timer purchase on Apple store. Thank you.

We figured out. We set $0 for all the countries under Pricing and Availability -> Price Schedule. It seems like that is the place to set the up-front charge. Now, the app is free to download.