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I have reviewed any after a few test I did not have any problems with the notifications. I noticed that you had a condition to show or hide the upload field. Is it possible that the missing files where cause of the condition.
When the user selects Trabalhe Conosco, it would show the upload field. If not, it would be hidden.
Please verify that the dropdown had the proper selection to display the upload field, so users can upload the file.