If the GPS tracker still has some battery left, try to activate LIVE-Tracking and search near the last reported location. When it is dark outside, you can activate the integrated LED to help you find the tracker.
If the battery is already empty and you can't find it at the last reported location, you can contact us directly at: https://tractive.com/contact
We will do our best to help you. Please make sure to select the correct support category in the contact form. Don't forget to include the device-ID of your GPS tracker in your inquiry.