Something happened to my Oxygen variation graphs, not sure when it occurred. However I can look back over many months and see the graph has changed, and is now displaying many high variations. Many of the charts I am looking over originally showed no high (Yellow) variations for weeks at a time, and when I would see a yellow line, it was a minimal range. What has happened, and what is being done to fix this? My fitbit is connected to a samsung Galaxy S21 ultra.
