W-8 Form for EU Company

Hi, I can’t seem to fill out the form on your Tax Information site.
Specifically, I cannot answer the question, “Claim of Tax Treaty Benefits.”

I have read all the documentation, but I have not identified what my LOB code is.
I have a classic company (SRL) duly registered in Italy.

Can you help me? If there are European or Italian authors, how did you respond?

Probably browser issue. Try with another one.

Maybe I explained badly.
I don’t know which of the options should I choose?

Just choose “other” if it’s not listed.