if you click on an email account in client area, at the bottom the settings are still there,.
they are not there if you did not add the server domain name to the server hostname
how do you do that is:
let's consider as an example, an email server domain name: example.mailserver.com
click on the server, and top corner right there are General settings, once in General settings at the bottom you see Server Hostname, put in the example.mailserver.com, and Add it.
You should have the settings populated for all email accounts the respective email server serves.
If not working, then open a ticket .. you might encounter a glitch somewhere.