NU1605 Detected package downgrade: Xamarin.Forms from 3.1.0.697729 to 3.1.0.637273. Reference the package directly from the project to select a different version.
Thank you for sharing the package manager message.
This states that the projects are using a version of Xamarin.Forms that is a little too old, 3.1.0.637273. If you update all your projects to Xamarin.Forms 3.1.0.697729, you will then be able to install the latest release of the Telerik UI for Xamarin (2018.3.921)
Regards,
Lance | Tech Support Engineer, Sr.
Progress Telerik
Do you want to have your say when we set our development plans?
Do you want to know when a feature you care about is added or when a bug fixed?
Explore the
Telerik Feedback Portal
and vote to affect the priority of the items