It's a manual for setup (in Farsi, you can click to other languages) that needs to be as accessible as possible to the least technology a literate people in the world as well as the ultra techy. Often people that have extremely limited data connection or no data connection as well. It has to be as simple as possible, and as clear as possible.

Check the main landing page and you can see it's a relatively modern site, they just gave a very restricted target audience the manual needs to be available for.

What's wrong with it?

I guess too many links at the beginning, but other than that it looks like your average website, just RTL.