Unable to Revoke App Permission in Office365

I gave MultCloud permissions to access OneDrive for Business in Office365 in order to migrate files from another cloud provider.  I would now like to revoke the permissions but can't figure out how. 

I am a global admin for this Office365 tenant.

MultCloud is listed under the "You can't revoke permission for these apps" section in the app permissions page (https://portal.office.com/account/#apps).  When I click on "Details," this pops up:

There is also no option to delete at the app access panel  in AD (https://account.activedirectory.windowsazure.com/r/#/applications). 

Any help would be appreciated.  Thanks!