One of the things which often catches people out is little typos - which is why I wanted to clarify what the commands actually used are. If there is a typo in what is being put here, chances are there is a typo in some of the strings being used - this isn’t a criticism of anyone’s language or typing skills, its just a fact that computers tend to be unforgiving.
I dont see how nmap could work with a nmap -Pn -f -A boxname 1.2.3.4 type argument either.
From what I can recall, -f is used to try and avoid firewalls / filters by fragmenting the packets, which seems an odd choice - but as a huge caveat, I don’t know the box in question so it might make sense.