Twitch nobody sees my messages in the chat?

I've been writing in a streamer's chat for days. However, he and the chat can't read my messages. But it's only for one stream, I've already dedicated myself to the Twitch support, but there's no help. What can I do so that my messages can be seen again?

Are you sure your messages won't just be overlooked?

Yes, because he is a very small streamer and I also asked him about dc and he said my messages are not shown.