My Garmin 235 stopped displaying the Aerobic and HR zones after I've done a run.

Do they show up in Garmin Connect Web? Does the activity show the heart rate graph?

It showed up Saturday after my run. The last 3 it hasn't.  

Pace, cadence,  elevation are the only things.  Missing Aerobic and Zones 

If there is no heart rate, there can be no hear rate zones either. First of all check whether your HRM works - it can be disabled in the general settings, or in the power mode for the concerned activity type. 

1. Can you see the heart rate during the day (when not in activity), on the watch?
2. Can you see the HR during the activity on the watch?

Yes the HR is going on the watch.  I don't look during my run.  I'm so afraid of screwing something up and ending or deleting my run.  Lol

I was just looking at the HR. Shows it active and resting HR.

Could you open the activity in Gamin Connect Web, make it public (click the padlock icon top right), and post the URL that you see in the browser's address line, here?

I'm not seeing a padlock.  

It's open for public to view.  Everything is. 

6342732 said:

It's open for public to view.  Everything is. 

OK, so just post a link to the activity.