Due to the limited storage space of the ring itself, we recommend that you open the APP at least every 3 days to synchronize and collect data to avoid data loss.
When synchronizing data, there will be a progress bar at the top of the APP. During this period, please keep the phone screen lit until the progress bar is updated.
If you still cannot successfully collect the report after this, please send an email to "support@circulsense.com" and we will analyze and solve it for you.