Users statistic software is not updating in their cPanel account.
When this issue occurs, it can be due to configuration issues in the Statistics Software Configuration section of WHM.
The primary reason this can happen is if you have the ability for users to select stats disabled and the stats software is not active by default.
Inside the Statistics Software Configuration interface, you can either make the statistics software you would like to use default or enable the ability for users to configure their statistics software in cPanel.
If your configuration looks like this, select Choose Users in the User Permissions section to enable users to enable the statistics software or make them active by default using the checkboxes.
Another reason user's stats may not update is if the user has exceeded their disk quota. If your user has exceeded, their quota consider expanding the disk space allotted or freeing up space within the account.