Hey mate!
I'm going to try reaching out to the streamer. The integration is simple, but it might not be clearly explained: the streamer needs to set the minimum number of bits required for chat donations to trigger in-game effects.
Also, besides donations and subscriptions, the streamer can optionally add a custom command (e.g., !corn...) so chat can interact without donating bits. To prevent spam, this command only works once every 2 minutes.
Thanks for your feedback! If you have any questions, feel free to message me or send me an email.