The problem looks like this:

Why this happens

According to the Google Analytics documentation article What the value (not set) means:

If you see (not set) as a value for Landing Page, this is generally due to a session with no page or screen view level hits included.

Which is exactly what happens when you install GA Connector:

  1. GA Connector sends events from the CRM to Google Analytics.
  2. These events are grouped into sessions. You can read more about this here.
  3. These sessions don’t contain any page views (because there were none), which is why you see more (not set) page views.