I recently (2/16/2021) installed Kaspersky Internet Security 21.2.16.590(b) on Windows 10 v.20H2 build 19042.804.
In KIS > Settings > Interface I removed the checkmark from "Receive informational messages and advertisements from Kaspersky."

Nevertheless, I continue to receive informational messages. Just today I received a message stating "Storing passwords in a web browser is risky."
How can I really stop receiving informational messages from KIS?