Limited is a bit like "instructor planning mode." If your account is limited, students in your classes can't open activities you've assigned to them. All other Pivot Interactives features are still available to you, and all data, both your students' responses and all your activities, classes, scores, are retained.
To keep your active account active, you need:
A minimum of 10 active seats in your account, and
The number of students enrolled in your classes must be less than or equal to your current count of available seats.
If your license expires or the number of enrolled students exceeds your purchased seats count, your account will enter into Limited.
Returning your account to Active
To move your account back to active status, you need to either:
Purchase or renew a subscription from the Pivot Interactives store.
Reduce total student enrollment for the license to be less than or equal to the number of seats purchased for the license.
If you'd previously purchased an activation code for seats from Vernier, you will need to activate enough seats to match student enrollment or reduce enrollment to match your activated seat count.
If you have classes from the past that are no longer active, make sure to archive them. This will make sure that those seats aren't counting against your student enrollment.