I believe Beehaw has defederated from lemmy.world.

on my iphone: click the hamburger menu in the top right, click search, Search for “!humor@beehaw.org”, the sublemmy should be listed in the results, click it, then click sidebar, and the subscribe button should pop up.

If it says “sign up or log in to comment” then you got there from outside your instance and can’t subscribe from there.

• Start at lemmy.world, click the magnyfying glass up top to search.
• type in the search bar
• click search
• you should see the Jokes and Humor community info popup.
• Click the title of the community to go into the community (but through your server)
• Click the subscribe link in the sidebar

I have a comment here wishing it could be better :/

Try typing just hu or into the search function. Lemmy.world and beehaw should be fully federated so you shouldn’t have to search the complete path

And since we’re fediversed, in kbin go to magazines, enter your search term. It will search across the fediverse.

Communities page, at the top of lemmy.world. Search humor. Click subscribe next to !humor@beehaw.org

You’re on basically the biggest instance so it should definitiely already be there.