VO2Max graph not displaying on watch

On my watch, the trend line is for the past four weeks and there's nothing in it. I'll assume it's because I haven't had the watch for four weeks yet. That's probably the case with yours too.

It would be great if the watch would use the five years of data already in Connect, but apparently that's not the case.  

...this is why I waited to ask until I was wearing watch for more than 4 weeks. 

Maybe it needs more than 4 weeks of data? For me, tomorrow will be 5 weeks...  

Wow, has it already been five weeks? Yes, you're right, I just checked and I got mine five weeks ago. Well, there goes my theory. I hope someone form Garmin can help with this. May have to call support for this one.

Well, we have raised a good point here since it's been more than 4 weeks.  I too, hope one of the Garmin techs reading this can help sort this out. Surely we aren't the only ones experiencing this issue.

Update:  Just had a chat with Support on this.  

And while I don't have an answer, they are forwarding the issue to the engineers to see if the blank graph is a software issue or if it is by design if the VO2 Max metric has had no appreciable change. 

To me, a straight line is still a graph and it should show up.  If it's there in Connect on the phone, it should be on the watch as well.  Data is data.