HTTP 403 errors, even after uninstall

Hi

WP better security plugin is great, but I got a real bad issue with it.

I installed it on several websites and for each of them (and not for those I didn’t installed it), I got HTTP 403 errors on every single pages.

I tried to uninstall, clean the 2 tables in database, clean the **_options for this plugin, clean the htaccess, clean the wp-config.php but I have still the 403 errors in HTTP.

That’s a real issue for sharing pages in facebook for example : https://developers.facebook.com/tools/debug/og/object?q=http%3A%2F%2Fwww.etgblog.com%2F10532-lyon-evian-tg-3-0-resume-video.html

What do I need to clean to get good HTTP codes ?

Thanks !

http://ww.wp.xz.cn/plugins/better-wp-security/