Hello @viniciusleite
Welcome to the Community Forum! We’re delighted to see your interest in MQTT and HiveMQ.
If you’re looking to connect to the HiveMQ Cloud Broker using MQTT Explorer, kindly ensure that the “validate certificate” and (TLS) Encryption settings are enabled, as these appear to be missing in your screenshot at the moment.
Regarding Node-RED, could you please provide more details about the issue you’re experiencing? You may find helpful information in this post to address any missing configurations.
Regards,
Sheetal from HiveMQ team