1：错误码5.2.1错误信息如下
Your app includes content or features from 公司名, or is marketed to control external hardware from 公司名, without the necessary authorization. The inclusion of third-party content within your app, whether retrieved from the internet by the app or embedded in the app, is subject to the terms of the Apple Developer Program License Agreement.
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. Once we have reviewed your documentation and confirmed its validity, we will proceed with the review of your app.
Alternatively, please remove the third-party content from your app and its metadata.
Please see attached screenshot for details.
解决办法：
出错原因是个人开发者账号在没有公司授权的情况下上架时填写了公司信息，这里需要公司开具证明盖章之后重新发布。当然如果是企业开发者账号就不会出现这个问题。
2：错误码5.1.1报错信息如下
Guideline 5.1.1 - Legal - Privacy - Data Collection and Storage
We noticed that your app requests the user's consent to access the Bluetooth, but doesn't sufficiently explain the use of the Bluetooth in the purpose string.
To help users make informed decisions about how their data is used, permission request alerts need to explain and include an example of how your app will use the requested information.
Next Steps
Please revise the purpose string in your app's Info.plist file for the Bluetooth to explain why your app needs access and include an example of how the user's data will be used.
You can modify your app's Info.plist file using the property list editor in Xcode.
解决办法：这里大概是APP要使用苹果系统的一些权限，但是在开发代码中没有做权限申请备注，Mac开发的话需要通过XCode编辑项目权限说明，Windows电脑开发可以在HBuilderX项目下清单文件中编辑权限说明，并重新打包提交发布（注意再次打包需要升级项目版本）
3：错误码2.1 报错信息如下
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 the current version of your app in use on a physical iOS device, which shows the initial pairing process and entire app workflow with the designated hardware.
Be sure the video you provide shows a physical iOS device and not a simulator.
Next Steps
To help us proceed with the review of your app, provide a link to a demo video in the App Review Information section of App Store Connect, then reply to this message. The demo video must include the entire app workflow, beginning with pairing the iOS device to the hardware.
Make sure you also provide any required demo account information, including passwords, in the App Review Information section for your app in App Store Connect.
Resources
To learn more about providing information to App Store Review in App Store Connect, see App Store Connect Help.
解决办法：录制完整APP操作视频，发布在可直达的网址中，之后将视频网址发送给Apple进行审核