Why is there sometimes a module going up one data, there will be a data 0 down?

Why does the module go up one data and there will be a data 0 down?

Hi @qiubaodong, I see this regularly. In my experience, the uplink has ADR enabled and the TTN core is sending a MAC downlink to implement ADR by controlling the TX power and SF… but the device is ignoring the downlink. You can confirm this by looking at the gateway traffic, copying the uplink and downlink physical payloads, then analysing them.

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