Click on the domain (between brackets) and block it like you’ll block a magazine or a user.
You can also display a domain by copying it after your.instance/d/the_domain
edit: Warning : when you'll click on the domain, it will display its content that may be NSFW
EDIT: this doesn't block the instance, but only the domain. new tool coming soon, confirmed by the main dev:
domain blocking existed long before federation. It serves as a way to block sources like youtube.com, spotify.com. Blocking instances will be a separate option in the user profile soon. I will submit a pull request.
Click on the domain (between brackets) and block it like you’ll block a magazine or a user.
You can also display a domain by copying it after your.instance/d/the_domain
edit: Warning : when you'll click on the domain, it will display its content that may be NSFW
EDIT: this doesn't block the instance, but only the domain. new tool coming soon, confirmed by the main dev:
https://codeberg.org/Kbin/kbin-core/issues/118#issuecomment-942720