what is the best way to collect all data from the export data and get an over view?

Hi Nicolas, There are many options, you can do it manually (but that's not the best option), you can use the pull API to download all reports via a script and join, you can use our Push API to get all events in real time and get your overview from your data base and you can also use our Data Locker to get all raw data and build it in your overview. There are also aggregated reports and APIs. It's best we understand your use case to find your best solution. Best, Ziv ziv@appsflyer.com