I'm not entirely positive this is why I'm seeing authentication failures consistently now, but since it started when the v2 API was turned off I suspect it's related.
I've tried digging in to see if that's the case, but since I'm not much of a Ruby guy it's possible it's an unrelated issue.
I'm also seeing this, upon trying to login via huboard I get the 'securicat' Denied
Thanks for reporting! I think this is fixed now. I needed to update some gem dependencies that were using v2 api calls
Yep! Looks good to me too. Thanks @rauhryan!