## "QR code has expired"

Your QR code **refreshes every 90 seconds** and each one is valid for about 2
minutes. Keep the screen open, wait for it to refresh, and let your instructor
scan again. Turn your screen brightness up.

## "This QR code was already used"

Each code can only be scanned once. Let it refresh to the next code and try
again.

## "Session card is full" / "has expired"

- A card holds **10 sessions**; once used up it's complete.
- Cards are valid **1 year** from issue.
- Ask your instructor for a new card.

## "No active session card found"

You don't currently have an active card. If you have an **Unlimited**
subscription, show the **subscription QR** instead. If you're in a **program**,
show the **program QR**. Otherwise ask your instructor to issue a card.

## Wrong QR code

The Session Cards screen can hold several codes (session card, subscription,
program). **Swipe** to the right one for the class.

## Nothing scans and I'm offline

QR codes only cache if you opened the Session Cards screen **while online** at
least once. Connect to the internet, open the screen, then they'll work offline.

## NFC card won't link

- Turn on **NFC** (Android: Settings; iPhone: always on).
- Hold the card flat against the **back** of the phone and hold still.
- If it says the card is linked to another account, ask your instructor.