Hi There,
Could you please verify if you have it setup as per our guides?
Is firmware up to date?
MT MQTT Setup Guide
MR MQTT Data Streaming
The most common issue will be the misconfiguration on the broker or in dashboard, please make sure everything is correct and no traffic is blocked. If all is verified to be good and you still can't see the MQTT messages I'd recommend to open the ticket with the support so they could check the backend logs.
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