Well, today I tried a different way and put the links in JDownloader.
It works! This mean the links are "free" but no way to get the files from the MediaFire site, for now.
Curious. I tried the Mediafire links and they appeared to work to a point. There are two dialogue boxes on the screen. The one to the left encourages you to opt for a paid download. The one to the right pauses briefly with a message that you ensure you have Java enabled. Then after a couple of seconds it changes to the download link. Mind you the download speed is diabolical. I have fibre broadband and after nearly 5 minutes of downloading these two it's estimating around a further 30 minutes remaining.
I wondered if your problem, Greta, might be something to do with having an Italian IP address. Occasionally individual countries take decisions to make certain web addresses unavailable. But using a VPN as though from Rome the download link appeared. The other aspect is whether you have Java enabled. Though to be honest I can't imagine a modern computer functioning without Java being enabled. And I'm not entirely clear why Mediafire would need that as a pre-requisite.
I have never been entirely comfortable with Mediafire with all its nasty pop-ups though to be fair without the advertising the service wouldn't be free. But it looks like it's trying to be too clever for its own good and making life deven more complicated for the "free" user. I'll continue to stick with Pixeldrain and Mega.