Gave Nostr Wordle a go today too!
It worked. No issues.
Not sure if they have a hard mode nostr:npub1nndm5ewah9sdvpmanxfrhh8awjvj3avmjztf5yuu2mzulusle4asdc3qw9 so it might not meet your stringent rules.
WORD5 #433 4/6
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