Yahoo! is a HOT MESS!
What in God's name did you do to my Contacts? They're all screwed up! I'm sick of this BS with Yahoo! I'm going Gmail! Enough of this ****!
We are sorry for any inconvenience. The contacts pane is now on the right-hand side of the screen instead of a completely different browser tab. Please check this article for more info: https://help.yahoo.com/kb/SLN28059.html