Microsoft announced recently that it is shutting down its HockeyApp on November 16, 2019. HockeyApp is a beta version testing service for app developers to get crash reports and analytics. This service will be replaced by Visual Studio App Center. Microsoft had acquired the HockeyApp in 2014 with plans to integrate the app with Visual Studio.
Learn more about how to transition to App Center by visiting https://hockeyapp.net/transition/