A while back I had an support case with VMware support regarding NSX integration and that it wasn’t getting metered by vCloud Usage Meter in a customer deployment. Turns out that Usage meter looks for a Global Transport Zone before the discovery of a Universal Transport Zone and metering can occur. So if you are in a setup that only has Universal Global Transport Zones it is expected behavior to see no NSX monitoring hits being satisfied in Usage meter. This can be resolved by adding a Global Transport Zone as a fictive addition so that it will meter your setup.