To get the file, you need to get it's UniqueID, which you can get in the following way...
Authenticate against your O365 Sharepoint instance
Run the 'ListFolders' table to list your folders and copy the "ServerRelativeUrl" value against the folder.
In my test instance the Excel file i want to get is in folder that's with the "Share Documents" folder, so i use this table again and enter '/Shared Documents' into the folder parameter and see the folder it's in. I then copy it's ServerRelativeUrl which is something like '/Shared Documents/my folder'
I then go to the ListFiles table and paste the folder's relative url into the Folder field and run the table
this then lists all the documents in that folder
Go to the GetFile table and use the UniqueID to run the table
As it's Excel, the preview in QWC will probably show you nonsense, but if you go to the QlikView or Qlik Sense tab there's a URL that you can copy and then use in QlikView or Qlik Sense App as a URL/Web File path
just follow the steps to get you data.
I hope this helps and although it looks like a lot of steps, it's quite easy and once your application is set up is just a case of hitting reload.
