The File "View Downloads" page renders 1800 days - that is 5 years worth of data in the UI and the Accounts "View Downloads" page has 180 days worth of data. This value is not configurable.
There is also limit on how many rows the user can download. On clicking Download link on the File Downloads page, user can download maximum 5000 rows (not days...).
How to obtain File Download History older than 1800/180 days?
The File Download history up to the previous day is available in Reporter(Data Warehouse).
For more information on using Reporter, please refer our Reporter documentation from the Producer Portal (https://manager.flexnetoperations.com/subscribenet/documentation/index.html#bookmark6).