I am using the trial edition of the Kendo UI products and I'm working on a scheduler proof of concept.
I've reviewed numerous items in this knowledge base and on the common issues site and I still am unable to get any scheduler events from my api to show on the scheduler. I'm attaching my .html document and the results of my api service call from the browser. I have compared the date formatting to this data from your samples (https://demos.telerik.com/kendo-ui/service/meetings) and I don't see any differences related to the date formatting. I have also tried formatting the date in these formats being returned by the api - yyyy-MM-ddThh:mm:ssZ, yyyy/MM/dd hh:mm:ss AM/PM with no luck.
I can get my resources to appear on the scheduler ok and as you will see in my .html file that I can create an event associated to one of the resources with no problem when I manually create the event in the datasource.