"new" iphone 8 plus not providing imap option

Yes, I know that I SHOULD be seeing the proper options there. The issue is that the proper options ARE NOT APPEARING there. I have set up multiple email accounts on multiple iphones, so I am familiar with the process. I did not clone these two phones because I did not have wifi access at the time, and the direct phone-to-phone process kept failing, so I set up the new phone manually.

Here are screenshots. The first is my older phone, the one with the active accounts. You’ll see it is using imap and an earthlink.net incoming server. The email account is a mindspring account, but mindspring is owned by earthlink and they still use servers with both names. the second shot is my newer phone, trying to set up the same email address. You’ll see that it automatically defaults to a pop account with a pop mindspring server, and when I manually edit the server to the earthlink.net server info, I get an error message saying the server can’t connect.