No contact request is poping up

I believe you :slight_smile: , when you can select
“Listen for chat-starting messages from? → Nobody (only manually started chats)”
which means:
Chat Approval Mode: “Whitelisting – Strictly manual addition of chat partners.”

  • Disables 2.1) Prompt/open tentative chat for all email-chat compliant messages .
  • Disables the scanning of messages on IMAP server for newly approved email receivers (MsgSCAN).

(from Use-cases, chat rules and configuration options)