For some months already at a certain moment my instinct 2 solar (45mm) stops logging the nightly 5 min max average HRV monitoring.
The night average is still logged, however the max average and the graph is missing.
There is a reload button to get the data back but that does not work.
Already for 4 times I reset the to default settings of the watch and than for several weeks the max avg HRV is back, but after few weeks or two months it starts failing again. Will a full reset including all data reset help ? Or is there something else which is related to bad HRV monitoring ?