Welcome to the Fitbit Community @rowmel! I hope you're doing great!
Let me help you out, try these troubleshooting steps:
- Open the battery door using the black plastic battery door tool or a quarter and remove the battery.
- Wait 10 seconds.
- Place the battery back into the device making sure that the plus side is facing up.
- Close the battery door, then flip your Fitbit Zip™ over and give it a tap. The display should work as normal.
Let me know how it goes!
Magin | Community Moderator, FitbitIf you find something helpful, give it a vote and don't forget to mark it as an Accepted Solution!