ECG not on new watch series 6

Thanks for asking about the ECG feature.

Check here for availability in your region: ECG

ECG requires the current non-beta version of iOS and watchOS. For additional help with the ECG feature on your Apple Watch, take a look at these articles.

Heart rate notifications on your Apple Watch - Apple Support

Taking an ECG with the ECG app on Apple Watch Series 4 or later - Apple Support

If you have any other questions, please reach out to our team here: https://apple.co/HeartFeatures. If you believe that you are experiencing a medical emergency, please dial your local emergency services.

Take care.

You don't say where you are. Go here to find where ECG is offered.

https://www.apple.com/watchos/feature-availability/

I found a solution posted by someone else on another forum and copied it down below. This requires unpairing the watch AND a reset all settings on the phone itself. I have not experienced this issue, but others have.

Got a fix from Apple tonight - I would call it a work around until Apple gets it into an update. Bottom line the issue is with the iPhone and in the settings.

Step 1: Unpair the watch

Step 2: Settings - General - Reset - "Reset All Settings" Going to have to re-setup somethings on the phone but its better than a full restore.

Step 3: Pair the watch - either as new or restore from backup. I restored from a backup.

Step 4: Open the Watch App on the iPhone.

Step 4a: Go to "Heart" in the list of Watch Apps

Step 4b: Select "Set up ECG App on Watch" 

a shortened version implies you don't need to unpair the watch first.

Settings - General - Reset - Reset All Settings (on your iPhone)

I restarted my iPhone and did a force restart on my Apple Watch, then went on to the Health App on my iPhone and I had the option to “Set Up” the ECG app again!