Not sure what your next step is, but I'll be following your post.
When my kitchen ceiling vent/fan finally was repaired recently I discovered a wire connection had come apart. The problem was when Heartland installed it they used tiny little wire nuts that were the wrong size for the bigger wires being connected. All the electrical connections in the ceiling for that fan would have eventually come apart because of them using the wrong connectors.
Could your issue be a wire connection came apart? Can you pull that Command unit and check any connections?
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