@anh.nguyen , please try to use the decoder for Chirpstack V4 that I sent you via email/zendesk support and update us if that fixed the decoding problem.
The payload coming from Chirpstack makes no sense.
In you screenshot it says payload is AAAAAAAAAAAAAA== (Base 64) which translates to 00 00 00 00 00 00 00 00 00 00
But that is not a valid payload from the RAK10701.
I don’t know why, but your payload is wrong again.
This is not a problem with the Datacake decoder. Your RAK10701 sends a wrong payload.
The payload TFYuJA== ==> 4c 56 2e 24 is too short. It should be 10 bytes long.
Can you check the firmware version on your RAK10701?
I am using V1.1.2, which is the latest (I think).
Send through the WisToolBox console ATC+VERSION=?
It should return something like
Field TesterVersion: v1.1.2
Build Time Feb 28 2024 19:54:29
OK