I have never successfully started at KC chat with anyone except nostr:npub1h0uj825jgcr9lzxyp37ehasuenq070707pj63je07n8mkcsg3u0qnsrwx8
i use the KC browser everyday but I think you need your counterp...
I have no problems whatsoever, but the counter party has to use Keychat too. Any relay I think even though why not use theirs
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