Hi, Just making sure you checked this documentation (this is the eMember and BBPress integration documentation):
http://www.tipsandtricks-hq.com/wordpress-membership/wp-emember-and-bbpress-forum-plugin-integration-644
Next, in eMember's membership level, you can specify the user role. When eMember creates a WP user it will set the role to the one you specified. What role have you set there?
