[IOS]上架被拒2.2 打开后是空白界面，问题出在哪儿？

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