My email link is working fine, but when my wife logs in  as a different user, her email icon has dropped off the start page.  Its been working fine for months, but now, although mail is still listed under most used, and both her email addresses are listed in settings, there is no icon to click! I have added her address to my log in and she can access emails from there but thats hardly ideal.  Suggestions please!

BTW, this is actually her typing on my sign in.