Guideline 5.2.3 - Legal
We still found that your app provides potentially unauthorized access to third-party audio or video streaming, catalogs, and discovery services.
Your app and its contents should not infringe upon the rights of another party. In the event your app infringes another party’s rights, you are responsible for any liability to Apple because of a claim.
Next Steps
To resolve this issue, please attach documentary evidence in the App Review Information section in App Store Connect evidencing that you have all necessary rights or permissions to the third-party audio or video streaming, catalogs, and discovery services in your app.
In accordance with section 3.2(f) of the Apple Developer Program License Agreement, you acknowledge that submitting falsified or fraudulent documentation can result in the termination of your Apple Developer Program account and the removal of your apps from the App Store. Once Legal has reviewed your documentation and confirms its validity, we will proceed with the review of your app.
Resources
Review Guideline 5.2 Intellectual Property for more information about appropriate uses of third-party content and services on the App Store
Review App Store Connect Help for more information on including notes in the App Review Information section of App Store Connect
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Works great! Thanks for the save :)