Xamarin Insights no longer symbolicates crashes because it no longer accepts dSYM files. It's been broken for a while now.
Is this something that can be fixed or is Insights dead?
If you try to upload a dSYM file through the API, it just acts like it works, but doesn't. If you try to upload a dSYM file through the web site, it says "Error uploading dSYM: Unknown error. Make sure you uploaded a valid .zip file. Please try again."
I can upload that same exact dSYM to HockeyApp and manually upload the crash reports there and they work, so the issue is not the dSYM file.