Here are the steps that most often resolve the issue:
1. make sure the iPad volume is at the maximum.
2. Make sure the latest version of iOS and EventBoard is installed.
3. Check that the color frequencies are properly set in the TEEM EventBoard dashboard. If you're not sure what this looks like, you can see a screenshot of the TEEM menu here:
4. Restart the iPad
If the issue persists after you've tried these things, please let me know!