First of all, I apologize for the delay in the support provided. As I mentioned in the email, I had to be away and my auto-responder failed.
I have issued a refund for your purchase as well.
>Woocommerce files are now corrupted, I still have their “Choose File” visible to all my products.
This might be because of the cached files on your server. I checked the products on your site and the “Choose File” option was not visible.
We always try to support our users as fast as possible but sometimes these situations happen, hence the delays.