I have a problem with establishing a connection with the mqtt broker. I uploaded the latest 1.3 firmware. If I do not give any subscribe and publish topic, the module connects correctly. Unfortunately, if I give it, the module connects and immediately disconnects, which blocks my entire broker and nothing works.
I just noticed that the problem only occurs if you set up a Publish topic. When it is not set, everything works. I can send data via subscribe topic.