Sometimes when I log in, a message appears, but on the second try, it works fine.

Known behavior: In some logins, a message appears, but on the SECOND attempt, the login is successful. Response to the user: Politely ask them to try logging in again (they usually succeed on the second try). If the problem persists, it may be a user-account issue that the team will look into. Do not escalate immediately: have them try again first.