Trying to subscribe to https://mcr.town/c/manchester from kbin.social. So far no luck - I’ve tried searching for that exact url, and also going to “Magazines” and just searching for “mcr.town”. But both return no results.
So I’m going to see if just making a post with that link in it somehow kick-starts the federation between the two instances.
Answering my own question - I actually needed to search for @manchester@mcr.town and now I’m subscribed. Well done the Fediverse.