Error message with Gmail. Lack of modern security standards

Error message with Gmail: “Hi Dena, Someone just tried to sign in to your Google Account [email protected] from an app that doesn’t meet modern security standards.” How do I fix this? Thank you in advance.

Hi Dena,
go to Help > Check for updates and make sure you have a newest version of eM Client installed.
Secondly I recommend setting an app password for eM Client > https://support.google.com/accounts/a…

Best regards,
Olivia