Is it possible to change this figure in the reports? 15 days during summer is really short. Most of our inactive reports are 90 – 120 days. Can this number be adjusted?
Unfortunately, the 15-day limit is a result of the limits of the session data that is stored in Google's databases. Google only stores up to 15 calendar dates on the array that is attached to a device, so we can only accurately report the last 15 days worth of activity. Once the report is in the sheet and set to auto-refresh, we append to it to hold up to 30 or 60 days worth of data, depending on the report.
You won't be notified about changes to this idea.