When I click on a community, for example from https://lemmyverse.net/communities?query=Mazda I get take to a Error couldn’t find community on a lemmy instance that isn’t lemmy.ml, where I have my account. Is the community dead and how do I get the link to open on my instance?
You’re on .ml which is blocked by, and blocks, a LOT of instances. You can’t interact with .world communities.
That is not true regarding lemmy.world. There are only four instances defederated from lemmy.ml: infosec.pub, lemmy.cafe, quokk.au, and dubvee.org, and lemmy.ml is only defederated from porn instances, extremely far-right instances, and instances that are infested with spam bots. https://defed.xyz/check?software=lemmy&name=lemmy.ml
But note that, because no lemmy.ml users have yet subscribed to the [email protected] community, it will appear to have no posts, even though it really does have posts. You or some other lemmy.ml user must subscribe to the community in order for posts to start federating. [It looks like someone has subscribed after all.]