1. First, check to see that the RaspPi in the back is getting power. If it is, you'll notice that lights will be on.
2. If there isn't power there, check to see if the POE splitter has power. Again, you should see a light on the POE splitter itself.
3. If either of these isn't getting power, try unplugging and replugging them back in.
4. If that still doesn't pull the Flowstation up, consult a SyncTimes representative who can further troubleshoot the issue with you.