Upload file in form / email link getting error

We have a form with an Upload file button, all works fine.

Can you ONLY get this file / URL non-mobile device? I can’t find any mention of this. BUT it’s also happening in Firefox.

BUT… when my client opens up the email, it provides a link [ to the cloud / hosting the uploaded file ]
and is getting an error.

I’ve gone in and changed the permission that in the Dashboard > Forms tab

Restrict uploaded file access

Turn this on to restrict access to files uploaded through your site’s forms to people who are logged in to your site, i.e., you, your client, and collaborators. Turn it off to allow public access to files, which you might need for certain publishing formats or integrations, like Zapier.

OFF
Login is not required

But this is still happening. I’ve set up a dummy customer Editor 2nd account and am using Firefox which is the customer login …keeping my chrome as the Account holder. and still same error

SNAGit-0434%2010-25-2018

It was turned on previously?

If you toggle it off, you’ll have to clear/delete the existing form submissions.