I have updated the advanced settings for timeframe of calculating usage statistics from 3 months to 1 year. How do I get the internal usage account to refresh itself to the full year timeframe?
The usage statistics account would collect the usage data only from the moment you enable them (added the row in advanced settings). If you enabled it 3 months ago, only then the collecting of data was started. Therefore, you won’t be able to retrieve statistics for earlier periods (one-year period, in your case).