Appstore issues

Hello, I have published an app in the appstore, we have made some modifications in the sdk of the app and when publishing it in the appstore has been rejected by apple. Then I put the details of the rejection. De Apple 2. 1 Performance: App Completeness 2. 4 Performance: Hardware Compatibility De Apple 2. 1 Performance: App Completeness 2. 4 Performance: Hardware Compatibility Thank you for your resubmission. During our continued review, we found that the following issues with your app have not been resolved: Guideline 2.1 - Information Needed We have started the review of your app, but we are not able to continue because we need access to a video that demonstrates your app in use on an iOS device. Specifically, please provide a demo video that demonstrates how background audio and VoIP is used in your app. Next Steps To help us proceed with the review of your app, please provide us with a link to a demo video in the App Review Information section of iTunes Connect and reply to this message in Resolution Center. To provide a link to a demo video: - Log in to iTunes Connect - Click on "My Apps" - Select your app - Click on the app version on the left side of the screen - Scroll down to "App Review Information" - Provide demo video access details in the "Notes" section - Click "Save" - Once you've completed all changes, click the "Submit for Review" button at the top of the App Version Information page. Once this information is available, we can continue with the review of your app. *********************************************************************** Guideline 2.4.1 - Performance We noticed that your app did not run at iPhone resolution when reviewed on iPad running iOS 10.3.1. Specifically, the registration button is cut off in a way that made it impossible to use your app. Please see attached screenshots for details. Next Steps To resolve this issue, please revise your app to ensure it runs and displays properly at iPhone resolution on iPad. Resources For information on iOS device screen sizes and resolutions, please review the iOS Human Interface Guidelines as well as Points versus Pixels in the View Programming Guide for iOS.