There's definitely a bug in either the back end or the UI that can cause login to fail silently, and that also applies to registration. I don't know what the cause of either bug is, but it would seem that both result in the user getting no feedback. This is definitely frustrating, but also not terribly uncommon in early software. You get the happy path working first.
Overall, the experience hasn't been great, but I can only assume it will improve.
Perfectly stated. I was surprised Williams was even up there. Maybe this is the start of a Williams turnaround? I certainly hope so. I'd love to see them doing better.