Kind of despised the way you didn't even let me see a preview of my own created graph without having to signup, and the signup prompt didn't show up until I fixed the mistakes in the YAML. So I pasted something (generated), spent some minutes fixing the mistakes, then get hit with a signup prompt, before being able to see the graph... Just be upfront with the signup requirement, don't let me edit anything, if you're gonna gate it like that.

Thanks for the heads up; that shouldn't have been happening. Please try again.