If you were sent to fupload-euw2.app.box.com expecting a file or a page, something went wrong. This subdomain lives under box.com, a well-known cloud storage service, but the specific address returns a 404 error — it's a dead link. There's no content, no privacy policy, and no way to contact anyone behind it.
For context, Box subdomains like this are often used for shared file links or temporary uploads. But when the link is broken and the page offers zero information about its purpose, there's no reason to trust it. Most legitimate file shares at least load a landing page or a download interface.
So is fupload-euw2.app.box.com a scam? More likely it's an expired or misconfigured link. Either way, don't enter any personal data or click through from here. If someone asked you to upload files to this address, verify the link directly with them through a different channel.