Email Sync Issues for Mate 8

A

AC Question

From 2 days I have issues with my microsoft exchange emails synced to my Huawei Mate 8,
I get notifications of new emails, once i read it , its not visible in my inbox, I have deleted the account and re install it, Still the problem persists the last email i can see is of 6th November in my Inbox of my mobile.
Please assist me in rectifying this issues,
 

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