The data received by the gateway and device is inconsistent

[qiubaodong]

Why does the gateway have data transmission, but the device does not receive the data?
The gateway received three frames of data at 09:58, but the device’s application data was not received.

[ixem]

First I assume that you are performing a test (cause the TX rate seems high). I suppose your issue is the same discussed in the following topics:

Dataloss in the backend?

Hy, thank you very much, I did not know it exists. Did it really help?

Missing Packets on Application Data

You can find an authentication key in the application overview tab Then you’ll have to add it to your request as an Authorization header. Something like the following, IIRC: “Authorization” = “key ttn-account-v2.blablabla-blabla”

Seems like that the MQTT API have some issue infact many frame get dropped. If you try to enable to Data Storage Integration you will see that data get successfully received by TTN and stored, you could fetch data from there, even if this is not a real solution.