Batch "+ upload files" not working

I am trying to batch mint and the button “+upload files” is not functional.
I press it and nothing happens.

Can you take a screenshot of where you’re seeing this?

was meant to launch a collection. in the next few hours so an reply is greatly appreciated!

I click on “upload files” and nothing happens. Changes from black to dark gray, but i click and nothing happens.

I listed one as a test (not as batch). It worked. but now I need to mint directly on Foundation, so how can I burn the test one I minted. Batch still is not working.

need to burn this one: 001 POSTCARDS FROM THE FUTURE