Hi @antagonys
hearty welcome to the HiveMQ Community! Your interest in MQTT and the HiveMQ broker is much appreciated. We’re always happy to see new users like you.
Thank you for providing detailed information about your setup. Before delving into the SSL-related issues, let’s try to confirm if the module is able to establish a connection without SSL. This will help us isolate whether the problem lies in the SSL configuration or if there might be other issues.
Could you please attempt to establish a connection from your device without SSL by using the public HiveMQ broker? You can use the hostname “broker.hivemq.com”, port 1883, topic “test”
If the connection without SSL works successfully, it would indicate that the issue might be related to the SSL configuration. If you encounter any errors or issues during this non-SSL connection attempt, please provide the details.
Additionally, take a look at another user’s successful connection example to the SIM7600. While it’s not the exact model as yours, the example might offer useful insights. You can find the example Cert issue when connecting to Cloud Hive instance - #28 by droidblast
Feel free to update us on the results of the non-SSL connection attempt, and we’ll proceed from there to troubleshoot any SSL configuration issues. Your participation in the community is highly valued, and we’re here to assist you every step of the way.
Warm regards,
Dasha from HiveMQ Team