From the website:
Important: Make sure you are paying attention to your instructor's screen or the projector where the attendance code is being displayed
If you're inside the CampusKnot website, make sure you select the class where attendance is being taken.
Input the code displayed. A quick tip: If the timer is down to 10 seconds, wait for the next code to be generated.
Please note each code is unique. If you try to input a code inside the attendance feature that has already expired, your submission will not count.