Re: Post-install login not working, grrrrr
Take a look at a post like:
https://bbpress.org/forums/topic/345?replies=4
As well, make sure you have the plugins for integration loaded. One in WordPress and the other in bbPress.
Also, it integrates well if you have bbpress in a subdirectory of your blog. If it resides somewhere else on the server, you might have to also take a look at:
https://bbpress.org/documentation/integration-with-wordpress/
Start there and if you have more issues, please post more details on what you have and have not tried because there are many different things that could have went wrong for you.
Trent