In the pic you sent, scroll to the bottom, there should be a configure button. Press it. Doesn’t look like anything happens, but if you know how to watch your logs, you’ll see some magic happen. If you don’t, no worries, usually the values will fill out.
And sometimes a reset is worth trying too, that just fixed for me. My reset smartapp might be a victim of the scheduler failures of recent, I will keep an eye on it.
However, do note that my device started yesterday not reporting the min/max amp and volt values, so I need to dig into the issue and see what recent ST change messed that up.
However, current values should still be accurate and working.