Let's try these steps first:
When charging, you should see the power button light red. If not, check that your power cable is properly connected to your wall adapter.
With the charging cable plugged in, press and hold down the power button for at least 5 seconds. When you release, the power button should turn green within 10 seconds.
Here is a link to our full Classon Smart Helmet – Quick Start Guide.
If you still can't connect, reach out to a member of our Rider Ops Team here. Rest assured, if we can't get you up and running quickly, we have a "no-questions-asked, scooter repair or replacement" policy!