In the current situation with Covid, it's hard to come by all possible devices, though, since we can't have them all at home. So, it would be helpful if you could run the demos locally to enable the detailed errors and post the error you get here - this might help us get an inkling on what might be happening. You can find them in the "demos" folder of your local Telerik UI for Blazor installation.
On another note - if you are having issues with our demos on all browsers and platforms, it is possible that there is a connectivity problem - our demos are a server-side app and that poses more requirements on the network traffic. Perhaps the problem lies there (a srever-side app is not the best for hosting on the web, but is what had been available for about a year and we had to ship out demos like that). Does running the demos locally or trying the components in a local test project work as expected?
Regards,
Marin Bratanov
Progress Telerik
Virtual Classroom, the free self-paced technical training that gets you up to speed with Telerik and Kendo UI products quickly just got a fresh new look + new and improved content including a brand new Blazor course! Check it out at https://learn.telerik.com/.