One of my company files allows me to send emails but the other company gets the same error code to sign in and when I do an error comes up saying I'm not signed in??? It says to update software but I have done that and plus it's on automatic updates!!! HELP!!! This program is so frustrating how it works one day and then doesn't the next! I am a MAC user and bought a PC that only runs this stupid program! How can one desktop version allow emails to send in one company file and not another. Checked data integrity and it is all good!