Downlink not working

Applications
1

Hi.

I’m running Class A device with ABP AS923.

I manage to see the uplink data that is sent by my device. However, after sending Downlink using Chirpstack UI, the downlink is not executed and I received ACK False error message. I’ve configured the RX2 as shown below. Any other configuration that i missed?

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11917×947 67.3 KB
2
21917×949 81 KB
3
31917×951 74.5 KB

3

Hello everyone!
I got the same problem in AS923.
Is there a particular configuration for this frequency plan in order to receive correctly downlink packets?
Thank you!