I have a situation where the local PC Outlook 2010 is not updating with Office 365 OWA enterprise E3 plan

Basically, if a change is made on A blackberry or OWA it is not reflected in Outlook 2010 on a local PC

Emails are coming on and going out from Outlook 2010 on the local pc.

If you bulk delete emails from OWA they are still visible on the local pc after many hours.

Mail box is around 35 GB / Limits are 50 GB

does anyone have any ideas as I'm pulling my hair out a bit