AWS Trust Service (ATS certification)

[ABarb.5]

Hi, I'm using a Discovery IoT Board B-L475E-IOT01 with application FW STM32CubeExpansion_Cloud_AWS_V1.2.0.

I test the application with my think registered on AWS on september, that use the following endpoint ULR: a8yx4uphexpln.iot.eu-west-2.amazonaws.com, and it works fine.

Starting from October, AWS has new security policy, using new certificates (see image below)

and with new endpoint URL:

Now I'm not be able to connect the AWS server, and here above the result log from Discovery

Can you help me? How I wrong??