Re: What’s integration?
Reinstall won’t help you!
When you log into bb, you also log into WordPress, but not the other way around, right? Trouble logging in is usually a cookie problem.
Add this to your config.php:
$bb->cookiepath = '/';
$bb->cookiedomain = '.example.com';
and this in your wp-config.php for wordpress:
I think that those are all the things you need to set. Give it a go.
www.community.example.com you need to set up a subdomain. This is usually done in your control panel. Bear in mind that some hosts have restrictions on numbers etc.