Thank you Marcos for mail box counting information
User said they have 2000 mailbox but, because pandemi they only will buy 700 seat.
I read this and found https://support.eset.com/en/kb3110-licensed-number-of-mailboxes-exceeded-for-eset-mail-security-for-ibm-domino-server
"If after 42 days additional licenses have not been entered to cover the unprotected mailboxes, your Protection status will change to RED. You will receive a notification that your protection has been disabled. If you receive the notification shown below, immediately contact your sales representative to purcha