ECG on Epix Pro Gen 2

I have a 2 month old Epix Pro Gen 2 Sapphire that had the ECG app right out of the box. In fact, I see older ECG test results in Connect. Now, the ECG app is missing. I tried these instructions but the app dos not appear: https://forums.garmin.com/outdoor-recreation/outdoor-recreation/f/epix-2/365736/epix-pro-gen-2-no-ecg-on-16-22---how-do-i-get-ecg-back/1754475#1754475. Any suggestions?