Ask How to increase retention rates for a membership site?

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People keep joining my membership site but many don't stay for long. I'm not sure what I'm doing wrong. I offer good content but engagement drops after a few months. Some say I should add more value, while others suggest better communication. Should I offer rewards, exclusive perks, or something else? I want members to stay long-term without feeling pressured. What are the best ways to increase retention rates for a membership site?