Zerodha Pi crashed with error could not create ssl/tls secure channel

Pi crashed with the below error on login -

“could not create ssl/tls secure channel”

I did contact the customer support of this app provider and this is what they had to say -

kindly make sure that the SSL certificate used for the SMTP service offered by the Microsoft Exchange Server is not expired and the SSL certificate used for the SMTP service offered by the Microsoft Exchange Server match the hostname you are using. Please make sure that the SSL certificate used for the SMTP service offered by the Microsoft Exchange Server is not revoked

The detailed error logs -

Can someone explain what is to be done?