Our manager keeps changing. Is that normal?

Common, and one of the most-cited reasons Boards leave. It is also measurable, which most Boards do not realize.

Ask any prospective company for its community manager turnover over the last twelve months, defined as departures divided by average headcount, and ask how many managers your community would have had over the last three years under their model.

A firm that answers precisely is telling you something. A firm that declines to answer is also telling you something.