Sometimes in Backend, and obviously on front end, on this website: hidden link
Look at the bottom of the page: the team block is an ACF Repeater.
If you switch between IT language and EN, you will see that the last two entries are different.
That's because randomly, some entry is being deleted. In Italian or English section.
I tried to confirm the correct entries on friday, in IT and EN, but yesterday some of those disappeared again.
I really don't know why it is happening for the last entries only.
Note that repeater fields are expected to have Copy or Copy Once setting, depending on whether the content will be the same across languages (and only the language of the text different). The Field Groups themselves ordinarily should be set as not translatable.