I have replaced "find another instance" with "sign up" because it confused new people. The end effect is the same, you sign up, just somewhere else.
What about "sign up on another instance"? Or maybe add "on another instance" next to the button?
With the default closed message it is confused to have "registrations are closed" followed by "register"
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What about "sign up on another instance"? Or maybe add "on another instance" next to the button?