Removed all beta and still ECG does not work

It won't work until you install the public release of the next WatchOS.

Which is when? My phone is on 14.5 and my watch is on 7.5

i don’t think I have beta installed now.

7.5 is beta.

Thanks. (a) it’s annoying that it doesn’t say beta (b) this use to work with betas - and now it doesn’t.

Delete the ecg app and reinstall it from app store on your apple watch. Thank me later.