I've got the same issue, mine is about 6 years old and it's a 2G card. I used to monitor my progress on the app until one day it just quit. I could easily replace the card myself if I could get the part. I'm surely not going to spend $1,000 out of pocket on a new machine. How is my therapist monitoring my progress.... I guess he's not. I guess that tells you how much they actually monitor your progress. I don't want to go down the road of mailing in an SD card. When I got my first Phillips, that's what I had to do, it was a PITA!