Could You please clarify what it means. Are only 1 million requests can be send to the Dropbox API (https://www.dropbox.com/developers/documentation/http/overview) from the my custom application? Had i understood not correctly maybe?
This limit applies to upload calls made by third party apps, only when connecting to Business accounts on certain Business plans. You can find more information on this here:
https://www.dropbox.com/developers/reference/data-transport-limit