Resting HR is wrong

Hi,

For some reason, my RHR data has been the same every day. I remember it wasn’t like this before. When I first noticed, it was even worse: only the last 5 days or so were showing correctly. I selected ‘download all data’ from the settings, which improved it a bit, but the older data is still the same. I downloaded all my wellness data from Garmin and uploaded it again, but that didn’t solve the problem either. What could be the reason? Any idea?

Thanks for providing such a useful site!