I've been a bit concerned because at least twice in the past couple of months, the machine has told me the card is corrupted and the only thing I could do (per the machine) was to "erase" it. And now that I have the capability of looking at the data myself, I see that about 2-3 months of the daily+overview data is gone entirely. But data from both before and after that period still seems to be there, at least the overview data (not the daily data).
So: is this due to a flaky machine, or a flaky card or something I'm doing wrong? Should I request a replacement card from Apria, or does that open a can of worms? Like require a visit to a sleep specialist and/or a new sleep study?
I've had this machine for nearly 4 years; is it time to consider getting a new one? My doctor originally suggested it would last 5 years at least, but I've moved away from him and don't have a local sleep specialist yet, so I am not able to consult about it easily.