and this is my M5Paper receiver code that retrieves data from the server.

Thanks for your feedback!
The wifi connects fine, because of the wifi config you burn via the M5burner I think. But you are right I can add that wifi block just in case.

Update: I've tried with HiveMQ broker and the subscription PARTIALLY works: only the first message is received.
During the initial run (clicking run from the flow web UI), the code initializes then when publishing the first message to the topic via another client, the M5stick receive and display the message as expected. The get key part to get the values in the JSON data actually works fine if the message is received.

However, the subsequent published messages to the topic are not received by the M5stick. I've tried to run the code under the subscribe block inside a loop but it doesn't work neither.

I've also tested EMQ broker and with a self hosted Mosquito broker, same results: only first message published is received. So it is likely something misconfigured or bugged on the M5 side ? I've now tried with 4 different brokers lol.

In the code, I've used the generic MQTT blocks this time instead of the AWS ones.

thanks for your help.

I have been getting some code fails when trying to decode JSON files, If I add the get key blocks as you have then it just doesn't work and wont even load the json stream.