It is also not working for me, this opens http://localhost:3128/oauth/callback?code=... but on Kiro interface I see "There was an error signing you in. Please try again"
I don't understand why they killed their job board. We used to pay them a few hundreds a month for a a couple of job ads that we were quite happy with. But then they "decided to focus on enabling our community of developers and technologists to discover and learn about companies rather than just giving them a way to apply to an open role." Which meant they became a platform for recruiters that can spend monthly 10Ks+. That killed Stack Overflow for me.