New emails don't show automatically on Ipad's email folders

Hi there experts,

I have a user using Microsoft Office 2013 as the email client on his computer and Microsoft office 365 as the email provider. The user has created email folders under the inbox and rules that direct emails to specific folder. When he gets an email it'll show a number on each folder that corresponds to the amount of unread messages he has in the folder. So far so good. The issue is on his ipad and iphone,

I configured this email on his ipad and iphone, the email was setup successfully and all folders appear on it. The issue is that when he receives an email that is automatically moved into one of the folders by the rule the folder does not automatically show the "number" representing the  unread emails. If he taps on the folder it seems to refresh and show it but  not without his intervention. As you can see this is a big issue because he does not know when he receives new emails unless he taps each folder.

I have removed and reinstalled the profile, i changed the fetch and push settings on the account but the outcome still the same. Can anyone point me at what else i can do here?

Thanks in advance.