Hi there! I see you're having trouble getting the Air Lift WirelessOne app to connect on your iPhone with iOS 18.6.2. Let's get to the bottom of this together.

First, can you tell me a bit more about what's happening? For example:
- Does the app open but just won't connect to the device?
- Are you seeing any error messages?
- Have you successfully paired the app to the WirelessOne system before?
- Have you tried turning off Bluetooth and turning it back on, or restarting the phone?

This will help me tailor a solution for you. Meanwhile, here’s a general approach we can try step-by-step:

1. Restart Bluetooth and the App
- Go to your iPhone’s Settings > Bluetooth and toggle it off, wait a few seconds, then toggle it back on.
- Close the Air Lift WirelessOne app completely (swipe it away from the app switcher) and open it again.

2. Forget and Re-Pair the Device
- Go to Settings > Bluetooth. If you see the WirelessOne device listed, tap the “i” icon and select “Forget This Device.”
- Then, open the app and follow the pairing process again to connect fresh.

3. Power Cycle the WirelessOne System
- Remove the fuse for about 5 seconds (if accessible) from your WirelessOne compressor system, then replace it. This resets the hardware, helping it to pair anew.

4. Check App and iOS Updates
- Ensure your Air Lift WirelessOne app is updated to the latest version from the App Store.
- Your iOS 18.6.2 is recent, but double-check there are no pending updates.

5. Bluetooth Permissions
- In your iPhone Settings, check the Air Lift WirelessOne app permissions. Ensure Bluetooth access is allowed.

If after these steps it still won’t connect, it could be a pairing conflict—note that only one phone can be paired to the WirelessOne system at a time. If you previously paired another device, you may need to unpair it from that phone first.

Give those a try and let me know how it goes. I’m here to help you through each step!

Are you able to try these steps now?