Hey there, Julian from NodeBB here. It looks like it might be an issue with the theme not playing nicely with the newest version of NodeBB :)
In the meantime, you can get to your profile by clicking on your avatar in-forum. Let me look into this now.
Ooooh, I'd very much like to create a plugin for NodeBB so that you can log in with your ring. It'd be kind of like the SSO you guys have on here, except physical.
No clue how much work it'd take, and I'd need to get an NFC reader, unless there are some dev apps I can use on my phone...