Configuration
I have not changed the permissions of the plugin. These have the default settings.

Initial situation
I have a course in which a BBB activity is stored.
Guest enrolment is enabled in this course.
I have an inactive participant in the course.

Result for inactive participant
The course can be entered via guest enrolment.
The activity is available in the course overview and the course content.
The activity can be accessed and used even though the participant is inactive.

Expected
Only the guest role actually applies here, in which the activity should be hidden, as the participant is inactive.