Translation - Brazilian Portuguese - Language

[italoenio]

Good Morning!
I'm starting to translate some strings into Brazilian Portuguese... but there are special characters that are giving me a bit of a headache... for example, words with accents like são, ão, ç , você... I'm translating the files from the Server / text/ engl directory... I'm changing the unicode format, also deleting the client and server cache files.. even so, the invalid characters still remain... Does anyone know how to display these characters? (I know the translation work is big, but I have patience and I want to translate all the item descriptions and the dialogues as well). I want to create a server in Brazil and strengthen our community. But then, any good soul to explain to me how to display ç or é, você, cré você, accented words correctly? 
Examples:

https://prnt.sc/QO9b_-rHZH46

https://prnt.sc/qDYb3peESjA8

https://prnt.sc/2PChDMRqQieg

https://prnt.sc/c754U3MFasQK