I have viewer permission on a folder, and I am working on a program to automatically download files from that folder. I have set up and authorized an App, and the folder owner has Invited the app as a Collaborator on the folder.
In the folder however the Collaborator is still listed as Pending. I am not sure what else we need to do for the invitation to go through. (Last week I set up a free individual account at box,com to test this procedure, and when I invited an App to collaborate on a test folder, the invitation was accepted almost immediately.)