On the website I'm working, users ask very frequently when do they get to do the upload to finish the order. Its a printing business, so users want to upload asap, but we dont want to storage all those files, so we allow only the upload to be done after payment is confirmed.
To answer that question, I'm thinking of adding additional info next to the buttons - along the funnel - that goes to the next page saying something like "Upload after payment". Pls dont pay attention to the copy as the website is not in English, but something will be added to unsure them when the Upload will be done.
I've seen it in a few websites, some add the text in below the button, but I don't remember where I've seen it and I'm not sure if it should be inside the button or below the button.
What do you guys think?