Do you have to upload it to that specific site? You can upload it to plenty of other sites. Just to name a few, there's Dropbox, Mediafire, OneDrive, Google Drive, Github, and BitBucket(Bitbucket and Github can be used because you have a .txt file.)
(These are all free by the way)
And there are others on top of that!
It's like you didn't even read what he said... you probably didn't lol.
He's saying
1. Someone who has an account please go to this website.
2. download a script
3. upload it somewhere
Seriously, man.