EditorSettings i s obsolete and if you want to create your own custom editors please check this blog post for more info:
As to the other problems:
5) PinMode is obsolete - you just need to remove the code that sets the PinMode of RadWindow. If you want to set window.PinMode=PinMode.Pin, we would recommend setting window.CanMove = false.
6) I believe that this is not related to the Telerik controls, but generally this warning is displayed when you use ToString(), ToBoolean() or other convert methods without specifying IFormatProvider. I suppose that you will be able to workaround it by using the following code: Convert.ToBoolean(e.InitParams["IsLoged"], CultureInfo.InvariantCulture). Usually this could be ignored, but if you parse numbers, there could be culture specific problems - for example some cultures use different decimal separator.
7) This also seem unrelated to the Telerik controls. However, it says that it is not a good practice to nest generic types, for example: Action<ObservableCollection<ItemDto>, object> nests two generic types. It suggests that you should create a class that inherits from ObservableCollection<ItemDto>, for example named ItemDtoCollection and then the action will be Action<ItemDtoCollection>. This warning could be ignored, but since it is supposed to improve the readability of the code, you might consider changing your classes.
the Telerik team