Hi Hastingsglen,
To resolve your issue, let's follow the steps listed here: Find your keys, backpack, and more with AirTag - Apple Support to resolve. The steps are also below.
" More ways to find your items
If you misplace an item with an AirTag attached, use the Find My app to see or get directions to its current or last known location. If it's nearby, you can also play a sound from your AirTag's built-in speaker. AirTag uses the Find My network, an encrypted, anonymous network of hundreds of millions Apple devices that can help you find your things.
See your AirTag on the map
- Open the Find My app, then tap the Items tab.
- Choose the AirTag you want to locate in the Items list.
- If the AirTag is within range of your device or the Find My network recently detected it, you see it on the map. An updated location and timestamp appears under its name.
- If the AirTag isn't within range of your device or any devices in the Find My network, you see its last known location and timestamp. To be notified when your AirTag is within range of your device or detected by the Find My network, turn on Notify When Found under Notifications.
If you can't see your AirTag on the map
Play a sound
- Open the Find My app on your iPhone, iPad, or iPod touch, then tap the Items tab.
- In the Items list, choose the AirTag that you want to play a sound.
- Tap Play Sound.1 If your AirTag is within Bluetooth range, it will play a sound.
- To stop playing this sound before it ends automatically, tap Stop Sound.
If your AirTag is in Bluetooth range of your connected device but isn't playing a sound
Get directions
If your iPhone or region doesn't support Ultra Wideband, or your AirTag is outside the range of your device, you can get directions to its location.
- Open the Find My app, then tap the Items tab.
- Choose the AirTag that you want directions to.
- To see the route to your AirTag in Maps, tap Directions.
- To get directions from your current location to your AirTag, tap Go."
Best regards.