Hi,
I'm on J4.1.3, with PHP8, when opening one of my rereplacer entries, I get: 3 arguments are required, 2 given
I have tried reinstalling after removing regularlabs folders, but the same happens.
Can you give me (super) admin and (s)ftp access so I can take a look?
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I was not able to reproduce the issue here using Italian.
But I think the issue is actually not with any of the ReReplacer strings, but with the Joomla core strings.
I see you have an old J3 version of the Italian language pack installed.
Please update that.