Transporter asking for app-specific password and not working

I was using Transporter just yesterday and it was working fine to upload some test builds. Now today it said I needed to use an app-specific password... okay sure. I generate one, and try to login with that and no luck. It won't login at all.

Also tried using the command line delivery tool, and it won't authenticate with either my normal or app-specific password.

Any ideas?