Order Files Upload - Need help to hide/edit labels

Hello, thank you for your reply.
I just sent an email with my credentials via "Contact us" form.

I also wrote about a bug that I noticed yesterday - I'm posting screenshots here.

Hello,
I'm very glad to have purchased your plugin, it really works great and it's easy to setup.
There are just some customization for which I cannot find the proper files.
Here's the URL: Page for ordering photo prints

So, I want to hide this "File upload", and also when you add something to cart there is also a word "File ::" which I cannot find in the language files. Could you please help me locating these two?
Thanks in advance!