After making sure you have the desired settings in "System/Green Flying Panda/Configuration", you must instruct the extension to build all auxiliary data and reports.
You have two options for that:
- Navigate to "System/Green Flying Panda/Indexers" and invalidate all indexers
- Execute the following command in the command line
Please note this process can take a few hours. Heavily depends on the number of customers, products and orders you have in your store.