Azure AD Premium still requires although I already have it in place

Hi Folks, 

I have a AAD tenant with EMS E5 license in place that gives me the AD Premium P2 features already. I've setup a brand new AD Connect server and everything went well except after 6 hours or so, AAD still keep showing me the license error below. ADConnect server wouldn't appear under the Sync services because of this. 

Appreciate any ideas!