Hi, I'm Pete. Welcome to JustAnswer! I'm reviewing your question now, and will post back with your reply ASAP.
If the iFit card is not detected or faulty then the treadmill will not work.
Try removing the iFit card put it back in again, and ensure it is securely connected.
Check that it has access to the internet.
If it still won't work then you will need to get in touch with iFit support at https://ifit.zendesk.com/hc/en-us
Kindly take a moment to rate my service 5 stars at the top of your question page so I am rewarded for my time; tips appreciated :)You can always reply back at any time if you need any further assistance at all.Pete.--------------------