I am not blind but might have the chance to offer you a dev job (related to blindness). Here's the product we are working on: http://horus.tech
Just send me an email at saverio at horus dot tech if interested
I'm not sure what's the protocol for this kind of stuff (I'm not blind), but, your website being directed at blind people, wouldn't it be better to be set english as the main language?
Using Firefox 49.02 auto detect of language does not work. I'm using Jaws and assumed it was a bad language tag before I turned auto detect of language off.
I have my OS and browser set to English and am browsing from a Dutch IP address. I get the Italian page. Not sure which part of "Accept-Language: en-US,en" (which Firefox sends) is unclear.
Edit: oh there is an English button in the right top. Only saw it just now (a flag might be more colorful to spot).