Nike Running Club app not reporting accurate heart rate with Apple Watch
I got my new Apple Watch Series 6 Nike Edition a week ago. I have gone out and ran 3 times since then. I either get no heart rate values at all or I get one number (usually too high) and it stays constant for the full duration of the run.
At the end of the run, the Nike Run Club app, under Route Details, says that 'There was not enough data to create a chart" for my Heart Rate. However, I can go into the Health app and it has multiple data points for the period when I was running.
I have the latest version of iOS, WatchOS and NikeRunClub App. I have checked and NRC has access to all the data. What is wrong?
Apple Watch Series 6, watchOS 7