Understood. I will need to have a system setup please, I will be needing access to my emails especially when I purchase premium and hand them out to staff from my business.
Your server settings could change on premium. But, cPanel gives them out directly, so when you get that access, either file a ticket in the premium support forum, or you can always ask here and I'll use my own premium account to walk you through it.
Please see my post here. Your issue is not the same, just look at the server settings.