3. Ensure that 'IMAP' is selected and is blue as in the first screenshot.
The 'Incoming' server 'Host Name' should be set to zimbra.protectedservice.net and for 'Outgoing Server' the 'Host Name' set to smtp.protectedservice.net, both usernames should be the FULL email address that you are trying to set up, in this case firstname.lastname@example.org not just test.
Please Note that the outgoing server settings will say they are 'optional'. They are not and if you don't correctly fill these in your email account will not work on your apple device.