Basically this is how far I get, Then it opens and crashes. I am still able to open the application manually and all works.
You are experiencing the same issue as the comment on GitHub yesterday, please try to create a new issue as suggested. (Q&A is not a right site to report bugs and feature request, thanks for your understanding)
For your second question, iOS 17 will not be supported with Xamarin. Xcode 14 SDKs (iOS and iPadOS 16, macOS 13) will be the final versions Xamarin targets. Please see Xamarin Support Policy.
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