B4X FEED MQTT SimpleChat unable to connect to hiveMQ cloud

[practicalsoft]

I set name and host for local network work well one device as server and another as client

But I want to understand how to connect to hiveMQ with 2 device as client.

I set Host to XXXXXXXXXXXXXXXXXXXXXXXX.s1.eu.hivemq.cloud
I set
Dim mo As MqttConnectOptions
mo.Initialize("myname", "Mypass")
I try port 8883 and 8884
Then I receive this error
Error connecting: (EOFException) java.io.EOFException

What I doing wrong?

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