That looks fine.

As you said, you have checked on the device that the "Wireless Sync" for calendars is on. Just to make sure:

Go to

Calendar > Options > Accounts > BlackBerry > Wireless Synchronisation should be ticked

Also on the Admin Console, go to the user and click on the

"Component Information" tab

In there, you should see "Wireless Calendar" = Enabled.

Is that correct?