Google VR on iOS Icon is upside down portrait not landscape

Hey guys!
I’ve got a problem with the Google VR plugin on iOS: When starting the app on my iPhone 7 iOS 11 the Google VR icon is in portrait mode and it’s upside down . It should be in landscape mode. When turning it counterclockwise the VR starts fine. Tested it on Android phone and it works correctly.
The rotation on the phone is not locked. I’m building it on Windows PC with an attached remote Mac.

Please help me. How can I fix it?