Google IoT Core w/ NB IoT can't connect

Hi,

I am using the arduino tutorial for connecting MKR 1500 (NB-IoT) to Google IoT Core with the corresponding librairies.
It doesn't work.

Azure tutorial works fine, but not IoT Core.
I have done it several times while following each step precisely.

I have different hypothesis :
- certificate are no longer working and I don't know how to update them with the ones provided by Google (roots.pem)
- maybe the connection is not TLS 1.2

Is it still working for other MKR 1500 and Google IoT Core users ?

Comienza con el tutorial de Arduino para conectar la placa MKR 1500 NB-IoT a Google IoT Core y revisa las bibliotecas correspondientes. Comprueba el certificado roots.pem proporcionado y si la conexión utiliza TLS 1.2, comparando el resultado con el tutorial funcional de Azure. Se considera terminado cuando la placa se conecta correctamente a Google IoT Core o se reproduce y documenta el problema de compatibilidad que provoca el fallo.

Escrito por el modelo de indexación a partir del texto del issue.