Please check that you are running the latest stable Nimbus software release.
In order to stay on top of new releases you should subscribe to our mailing list.
Please check that your validator is attached to your node.
Now that you have Nimbus up and running, we recommend setting up a systemd service with an autorestart on boot (should you experience an unexpected power outage, this will ensure your validator restarts correctly).
Systemd will also ensure your validator keeps running when you exit your ssh session (
Ctrl-C) and/or switch off your laptop.
Ad a final check, we recommend you also go through the EF'S staker checklist.