I'm running 4.5.3, which I installed over 3.1.4.
I've just installed a license with zimbraMobile enabled. But I can't enable zimbraMobile for my users - it's not listed in the features list in the COS or in individual accounts. com_zimbra_mobilesync is in my Admin Extensions, though, and I've restarted a couple times.
When a user tries to sync, they get a 403 forbidden, which sounds like I need to select it in the COS features, but it's just not listed.
thanks for all your help so far,