Simple Memory only stores conversation history during the current session. If the session changes or the chat is refreshed, the memory is reset.
Check that your Chat Trigger is consistently sending the same Session ID. If each request generates a new session, the AI Agent treats it as a new conversation.
For long-term conversations, use persistent memory backed by a database or another storage solution instead of Simple Memory.
A good first debugging step is to log the incoming Session ID and verify it remains the same across requests.