Can someone explain what this arbiting is about? What the hell am I agreeing to if I don't mail this form? Also if I do mail this form why do they want to know

Can someone explain what this arbiting is about? What the hell am I agreeing to if I don't mail this form? Also if I do mail this form why do they want to know where I live? I do want to opt out of shitty terms if that be the case but I don't wish to tell them and any potential stalkers where I live