It is said that members join a membership for the content, but stay for the community.
Your membership site likely has members who may no longer be experiencing the same issues that caused them to initially seek out solutions. Their original problems be solved (thanks to your membership site) but they remain a part of the active community because they enjoy and see the value in interacting with the other members.
A strong community is a powerful incentive for new members to join and is an effective tool to maintain a high retention rate.
But what can you do if some members are causing trouble and stress for the community?