>have you or anyone ever used the 2ch sciprt before?
No - is it even complete?

I think you'd be better off using https://prefkarafuto.github.io/ or something
Note: I haven't tried this script either, but it's a continuation of 0ch+ (zerochan plus) which is at least known to work

There's also https://github.com/RealAngeleno/ZeroChEN - an English translation of the original 0ch+, made by Angeleno of the (now dead?) world2ch revival. It proved to be vulnerable to spam however, as most old Japanese web scripts are