@gfazioli
Hello gfazioli, how are you? Thank you in advance for the feedback.
I managed to solve the issue of changing the language, the problem was not in the .po / .mo file, the problem was happening because the file name I wrote wrong: (wp-bannerize-pro-pt_BR.mo) the correct name is : (wp -bannerize-pt_BR.mo), it doesn’t need to have the name -pro in the file.
I was thinking it was the same name as the plugin folder. My mistake, I’m sorry.