Why do you not want to answer this thread?(Your answer will be sent to Jeanette and Aytekin)
I test your form https://www.jotform.com/62317013839151 and I was able to use the Upload field to upload document.
Are you not able to do this on your form? Let us know if there are still issue
We will resolve the other question separately here https://www.jotform.com/answers/911275