You can also try dynalist, it's like workflowy, but with a lot more features. (you can import there your workflowy notes and start with that)
Nice. I have been wanting the due date feature for a long time on workflowy. There seems to be no development for workflowy beyond what was available a few years ago.
Workflowy is great but it feels a bit stalled. I've since moved over to checkvist. The combination of feature with a keyboard driven workflow works well for me.
that's a feature for me. It felt like it was a complete product when I discovered it, and still feels the same.