Looks like the admin for kbin.lol has some pretty valid gripes with the current status of Kbin. I have to agree, you can tell the platform is not up to speed at all.
Kbin looks visually great but the backend just isn’t there. Check out his statement, it’s worth the read.
I’m surprised you’re having trouble federating with kbin.social- that’s always been working for me from my personal instance. I have trouble federating with a few lemmy instances though. Lemmy.ml is still blocking the kbin useragent. And the communities of infosec.pub, sh.itjust.works, sopuli.xyz, among others- cannot be discovered from kbin.