I have problems during a downlink.
If the field “fCnt” is at “1” (I see it in the database “Postgresql”, table : “device_queue”) then the payload is sent to the device. However, if this is not the case, the payload is not sent.
In case of failure I find this in the “live lorawan frames”:
PS: the use of fCnt (Downlink frame-counter) in the request API and/or MQTT not change anything.
PS2: I use data (Base64 encoded) not jsonObject
thank you in advance for your help