Same thing happened to me. In February (my birth month), I noticed that when I open the menstrual cycle app, it reverted back to the year I was born instead of opening to the current year. That's bizarre for several reasons, not the least of which that women don't start menstruating at birth.... When I scroll through years to the present, my data is still there. But it's a minor annoyance to have to scroll through many years to get to the current date. What's more annoying to me is that it doesn't seem like having the correct year appear on a period-tracking feature would be that difficult to fix.
But it's been over two months (since I've noticed it). I'm super disappointed in how Fitbit responded to this and other glitches. I just bought a Sense and was so excited to upgrade. The device is beautiful and comfortable. It has the potential to do so much. Unfortunately, my husband and I both noticed that the HR tracking doesn't seem to be accurate. Our Charges were better. It's so disappointing. Apparently, this has been a known issue since Sept. and it still isn't resolved. It makes me wonder if the glitches in the menstrual cycle reporting will be resolved. Also, it would have been so cool if the temperature data on the Sense tied into your menstrual cycle reporting more directly. I'm sad that Fitbit's stellar service seems to be declining. Maybe it's the pandemic? I've used Fitbit for a decade and until recently had only extremely positive experiences. I've bought Fitbits for several people in my family and was going to upgrade my mom to a Sense for Mother's Day. Now, I'm not so sure.
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