We discovered one or more bugs in your app when reviewed on iPad running iOS 9.3.1 and iPhone running iOS 9.3.1 on both Wi-Fi and cellular networks.
Specifically, a blank screen is displayed only upon launch of app. Please see attached screenshot for detail.
We have tried on multiple devices and under both wifi and cellular setting but to no prevail.
Next Steps
Please run your app on a device to identify the issue(s), then revise and resubmit your app for review.
If we misunderstood the intended behavior of your app, please reply to this message in the Resolution Center to provide information on how these features were intended to work.
For new apps, uninstall all previous versions of your app from a device, then install and follow the steps to reproduce the issue(s). For updates, install the new version as an update to the previous version, then follow the steps to reproduce the issue(s).
Resources
If you have difficulty reproducing a reported issue, please try testing the workflow described in Technical Q&A QA1764: How to reproduce bugs reported against App Store submissions.
If you have code-level questions after utilizing the above resources, you may wish to consult with Apple Developer Technical Support. When the DTS engineer follows up with you, please be ready to provide:
complete details of your rejection issue(s)
screenshots
steps to reproduce the issue(s)
symbolicated crash logs - if your issue results in a crash log
我在不同的设备上测试过了，但没有出现这种情况，原因出在哪儿了
你的App的启动页是否是网络图片，来自于网络加载？如果是，确保一下此地址能被国外用户正常访问到，App Store的审核员主要在美国，确保他们访问时没有问题或者延迟。
上线前都要vpn验证一下是否能访问国内网络，账号是否需要验证码什么的。
你要模拟他们的网络情况