Missing POIs Like Westminster and Space Needle

Each region should come with so-called "GB Libraries" or "US Libraries", which automatically get installed once you install a respective region. Check if you have them installed: Open Orbx Central and go to My Products. Check if you see either "US Libraries" or "GB Libraries" under "Regions".

If not:

Open Orbx Central and go to "My Products" -> Select the TrueEarth region you're missing the POIs for and click Verify files.