Open edx ios app rejected(metadata)

Hello everyone , I tried to publish my app on the Appstore but apple rejected my app (Metadata Rejected) and now they need more information
( 1. Does your app access any paid content or services?
2. What are the paid content or services?

Is there any payment system in the open edx ios app source code if so how can I remove it safely because I do not need it ,
(I used open edx ios version 2.24)