Account with own domain, IMAP vs IMAPPRO

Account with own domain, IMAP vs IMAPPRO

Hi,

I have email account with my own domain. I use Em Client email plan and when I use IMAPPRO incoming host, email comes in Em Client only when I restart program. If I use IMAP incoming host everything is ok. Port is 993 both option. Why so?

What´s different IMAPPRO vs IMAP host settings?