Email set-up problem

I am failing to set-up email. see screenshot. Email is hosted at wix but i use gsuite and i loging on gmail.com.
Please help

Have you followed this guide on Gmail? Google Gmail | Manager

Thanks Lubos. my domain is hosted at wix and is a gsuite so i had to allow insecure apps via my admin console at gsuite. help is here for other users Wix Support