If no metrics are showing on Grafana but device is online, follow these steps.

Legacy Issue..............
Check if Registered.json in cd /var/lib/ame
if not do these

Eg.
sudo rm -rf /var/lib/ame/intertrade50/intertrade_DEV_CHRIS_intertrade50_*.json
in cd /var/lib/ame run the following - rm -rf channel*/intertrade*.json
Then run ./start.sh