Flutter app upload it in apple store and solve the reason of rejected

Guideline 2.1 - Performance - App Completeness We discovered one or more bugs in your app. Specifically, your app was not responsive when we tapped any course. Please review the details below and complete the next steps. Review device details: - Device type: iPhone and iPad - OS version: iOS 15.1 Next Steps Please run your app on a device to reproduce the issues, then revise and submit your app for review. If at first you're unable to reproduce the issue, try the following: - For new apps, uninstall all previous versions of your app from a device, then install and follow the steps to reproduce. - For app updates, install the new version as an update to the previous version, then follow the steps to reproduce. If we misunderstood the intended behavior of your app, please reply to this message in Resolution Center to provide information on how these features were intended to work. Resources - For information about testing apps and preparing them for review, see Technical Note TN2431: App Testing Guide. - To learn about troubleshooting networking issues, see About Networking. Guideline 2.1 - Information Needed We have started our review, but we need additional information to continue. Specifically, it appears your app may access or include paid digital content or services, and we want to understand your business model before completing our review. Next Steps Please review the following questions and provide as much detailed information about your business model as you can. 1. Who are the users that will use the paid content in the app? 2. Where can users purchase the content that can be accessed in the app? 3. What specific types of previously purchased content can a user access in the app? 4. What paid content, subscriptions, or features are unlocked within your app that do not use in-app purchase? 5. How do users obtain an account? Do users have to pay a fee to create an account? Guideline 5.1.1 - Legal - Privacy - Data Collection and Storage We noticed that your app requires users to register with personal information that is not directly relevant to your app’s core functionality. Specifically, the following fields or actions are required but do not appear to be directly relevant to your app’s core functionality: - name - phone number Next Steps To resolve this issue, please either remove all required fields that are not relevant to the app or make those fields optional. Information requested during registration must be relevant to the features the app provides. Please see attached screenshots for details.