Unable to set up ECG, Blood Oxygen, Cardio

When trying to enable the ECG, Blood Oxygen, Cardio function on my serie 7 Apple Watch using the iPhone 13 Pro Max. Latest IOS and Latest Watch Apps update. I get an error message “Unable to confirm location. Make sure your iPhone is not in airplane mode and has a working SIM card.” I have checked both the watch and iPhone and neither are in airplane mode. Suggestions?