Thank you, Jenia, for your help.
The site I have had problems with is:
...and, actually, yes... it really looked like machine translation but I never allowed it and didn't just change the text that was displayed when I open the page but it changed the one written on the "dashboard" to!
I've been trying to write a site both in English and Italian and it seemed like it took the english version and "mechanically" translated it in Italian and pasted it to my "Italian" page then took the Italian versione, "translated" it and replaced my english version with it...
You can imagine how surprised I was to see all my work gone into gibberish...
I hope we can find a solution to this problem and let me thank you again for your help.