AppStore被拒，说IPV6下无法输入账号和密码，整了两周了没解决，在线等

AppStore被拒，说IPV6下无法输入账号和密码，整了两周了没解决，自己搭建IPV6测试环境测试没有发现任何问题，官方给的具体错误如下：
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Performance - 2.1
We discovered one or more bugs in your app when reviewed on iPad and iPhone running iOS 10.2 on Wi-Fi connected to an IPv6 network.

We were not able to input demo account username and password.

We've attached screenshot(s) for your reference.

Next Steps

Please run your app on a device while connected to an IPv6 network (all apps must support IPv6) 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 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

For information about supporting IPv6 Networks, please refer to Supporting IPv6 DNS64/NAT64 Networks and About Networking.

Additional Information

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

急需帮助，有知道问题在哪儿的出来帮一下，实在没办法了