With an FTP configuration, it's important to respect the naming rules.
If you want to create products & listings, your CSV file has to be named Import_products_XX.csv where XX can be replaced by the ID you want.
- If you want to update listings, your file has to be named Update_listing_XX.csv.
- If you want to manage orders, your file has to be named Order_update_XX.csv.
The use of a unique ID and/or the timestamp at the end of the file name is mandatory in order to avoid overwriting files and thus losing data. So each file you drop in your FTP server must have a unique name.
Make sure you drop your file at the root of your FTP and not within one of the folder.