Drop box Integration with erpnext

Hello Guys,
I’ve integrated dropbox with my ERPNext site (by this video,6- ERPNext integration with DropBox ,Backup ERPNext on Dropboxيالعربى - YouTube - ).

Through the complete process, I don’t get any errors, but I can’t see the database file. Why happening?

Please help me with this issue.

This is my app

App details

App permissions

Please help me.