Yes, since GD bbPress Toolbox 1.4. But, when updating, you must recheck all plugin settings depending on roles, and select roles you want and save. When dynamic roles are used, normal WP roles are suspended.
Yes. If any of these plugins (GD bbPress Attachments, GD bbPress Tools and GD bbPress Widgets) is active, GD bbPress Toolbox will disable them on activation.
Version 5.0.x of GD bbPress Toolbox Pro doesn’t disable the free plugins, and you need to disable them before activating GD bbPress Toolbox Pro. This will be addressed in 5.1 release.