Ask What are common mistakes in membership site management?

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I'm new to running a membership site, and I don't want to mess things up. I've heard that small mistakes can hurt growth and member retention. But I'm not sure what to watch out for. Should I focus more on content, pricing, or customer support? Are there common pitfalls that most beginners fall into? I want to avoid anything that could frustrate members or make them leave.

What are the biggest mistakes people make when managing a membership site?