Re: WordPress integration help
I just got done reverse integrating existing installs of WP and BBP. So I didn’t actually run the BBP install, but I think “…/bb-admin/options-wordpress.php” answers your question about the secret key. See the “WordPress database secret” section on that page.
It points you to “…/wp-admin/options.php” for the value “secret” setting in your WP install. I think this may be the SECRET_KEY you are looking for.
If your install is already done, just go to “…/bb-admin/options-wordpress.php” and enter the secret in the text field provided there.