You can go online to https://www.skisnowcreek.com/plan-your-trip/lift-access/tickets.aspx go to your account and add a day onto the card that you currently have in your possession.
If you are using Mobile Pass or Ticket through the My Epic App, look for the green checkmark on your Mobile Pass or Ticket, indicating that your phone will scan from your pocket. Make sure to enable Bluetooth on your phone prior to scanning your Mobile Pass or Ticket in the lift line. More information on the My Epic app and Mobile Pass and Ticket is available here: https://www.epicpass.com/app.aspx