maybe kbin is too young to be able to do what you're describing? I'll put a screenshot of what I can see (desktop for kbin.social)
screenshot https://imgur.com/a/g3dJUyy
(btw will you type exactly the command you put, maybe with the code `` option)?
oh maybe we should prepare some instances in advance to invite people to come to. There's a list of kbin servers, and lemmy servers. I'd just like to know if there's a way to like mass add some communities. I would make an account on kbin.place, which seems new and for the US, but I don't know if I can add that many magazines