Links are checked at least once daily - I do have a few that are recently broken that I need to address - but File.pizza is okay again. I have switched the main link to Wormhole, because it's now my preferred option - and because File.pizza has been up and down for me in the past as well.
The website is up - the actual transfer service no longer seems to function in modern browsers. Have you (or anyone) had a successful transfer via File Pizza recently?
Just tried with a tiny file, it tries to work, as I can see the filename/size on the receiver end. But, it never downloads. It does say "Peers: 0, Up: 0, Down: 0".