The program didn't recognize accent marks or symbols

Hi, I been have a problem since a time.

I am from America Latina and I speak Spanish and English too and I use WinSCP like a tool to configure messages in my programs but when I try to use accent marks or symbols the program didn't recognize it, only I get a interrogate symbol, there's any solution ?

Where are you using accent marks? What exactly happens, when "the program didn't recognize it"?

Did you read this? https://winscp.net/eng/docs/faq_utf8

I use it when I try to edit a file, the content of a .txt or .yml, and when I save the file and reopen it the accent marks and letter don't appears only a question symbol

What editor are you using? If WinSCP internal editor, what encoding do you have selected? Can you attach a test file with the problem?