Re: bbPress is working, but now I can’t log into WordPress
Ah those two versions of bbPress and WordPress are not cookie compatible, without some extra plugins. Either of these two should work – one upgrades your bbPress cookie, and the other one downgrades your WordPress cookie.
https://bbpress.org/plugins/topic/freshly-baked-cookies/
http://superann.com/2009/02/26/wordpress-26-27-bbpress-09-cookie-integration-plugin/
Sometimes bbPress will lose keymaster access during reverse integration – try this to fix that: