Last time it happened… I wanna say a couple months ago… I noticed it within a couple days. This time nine freaking days went by, and despite my current HR showing in Connect (running on a Redmi Note 10 Pro), the historical HR data is absent for the past nine freaking days. Good grief.
I'm back on my Instinct while my FR 55 charges, and my Instinct is syncing HR data just fine. WTF is wrong with the FR 55/Connect app that it just gives up syncing historical HR data, with no warning, no error, no indication anything is wrong, till I go and look?