Exempt New Box View service account from the "Restrict Content Creation" setting
If an enterprise admin has enabled "Restrict Content Creation" for their enterprise (under Admin Console > Enterprise Settings > Content & Sharing), only Admins and Co-Admins are able to create folders and files in the All Files location. This restriction also applies to the service account associated with New Box View apps. This means that if an admin wants to keep "Restrict Content Creation" enabled, they cannot use the New Box View with the same enterprise. The New Box View service account cannot be made a Co-Admin. The "Restrict Content Creation" flag also limits this user from owning any root-level folders.
Try using Service Accounts. It’s similar to what New Box View (App Token Apps) offer except that they manage the folders where they upload the content to. You would have to manage how they redistribute the content across different folders in their service account.