I have q2a is integrated with wordpress and use Nginx. I can't choose the first option of the url structure ( /123/why-do-birds-sing) . I try config htaccess but not do. how i can????
You should configure a rewrite rule for Nginx.
Have a look here :
http://www.question2answer.org/qa/3064/howto-run-configure-it-right-on-nginx-web-server
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