MKRNB 1500 MQTT connection

Hi,

I have been trying for days to connect a MQTT server. I can succesfully connect to GSM network via Vodafone NBIoT sim card and can send data to there, yet both Azure and Google Cloud Services MQTT connection is failed.

I have followed tutorials for Arduino Cloud Provider Examples , though the network connection is okay both MQTT connections are failed. I am positive that my setups both patforms are correct.

Anyone achieved to connect with those examples? Any help appreciated.

Thanks!