Can't access IMAP from iPhone, iPad or Apple Mail

Can't access IMAP from iPhone, iPad or Apple Mail

Hi, Today I upgraded to get map access. My domain is 3jco.com. I can't get it to work, please advise

Here's my settings:
imap: imappro.zoho.com
smtp: smtp.zoho.com
UID: ng@3jco.com
Auth: password
MFA/2 factor: Off
imapaccess: ON

Please help/advise, this is getting boring.

Thanks, Nik