I am trying to locate "Incoming Server" information for my Thunderbird email account. In Account Settings, when I click on "Server Settings", I get the message "an existing account with this name already exists" and to "enter a different account". I've tried both of my accounts and keep getting the same message. I've closed Thunderbird and reopened it and the same thing happens. In fact, I get this same message no matter what I chick on in Account Settings. I would be grateful if anyone can help me get out off this merry-go-round. I need my "incoming server" info to open an email account on a new iPhone. Thanks!