Can't update some translations

I'm facing a uncanny situation.

Some texts that I have translated are not updated. I tried to restart the system, to remove the language and create it again, with other browser. None of this works.

With other texts, a wost thing happens. I correct some translation, when if refresh the page several times, the system alternates between the versions.

BTW, I'm not using POEdit, but notepad++ to translate the .po file. Once I finish, I open it on POEdit and save (to create the .mo file).

Anyone can help me?

LMN