Hi
I'm getting the same 498 error message when I run the QuickReport template on Windows 10 AppStudio. It also occurs when I launch it inside the iOS Player.
In "My Content" section of AGOL I currently have a Web Map (public) and a Feature Layer (public). I had the Feature Layer restricted to Owner and I changed it to Public when I read this post, but the same error keeps showing.
I deleted the Feature Layer, created another one, copied and pasted its URL to AppStudio Settings > Properties > Form > Feature Service Address. Initially the error changed to "400 - Invalid URL" and then it returned to 498 error.
What am I doing wrong?
Oscar