Unfoldable

We are given a .fold file, after searching around for a bit, we can find that this is some sort of origami file and can be opened with origiami simulator

Playing around in it we notice that the origami is half broken, so to fix it, ,we have to break it even more

Go to advanced options and after tingling around with the settings a bit i found this

Note: remember to set Fold percent to 0 as well then just let it break for a while and you will see the exact same result

The flag looked unclear so i asked the admin and he said it was wrapped so the first 5 chars and the last char is idek{...}

For the content of the flag we can make out RF4, for the first letter we can just bruteforce that, After a bit we find that it is ORF4

FLAG idek{ORF4}