I might have experienced one of these deadly bugs, although I got way to high measurements, not too low.

I bought one of these monitors for fun, because I wanted to see how my blood sugar reacts to different foods. The freestyle libre 3 plus.

After wearing it for some time I woke up one morning to sky high blood sugar, talking 13+mmol/l. My manual measures showed around 4.9mmol/l.

The device was essentially not functioning anymore. I sent the company an email, filed out a report, returned the device and received a new one in the mail.