Sophos not allowing to use certificates in certain webs

Hi,

When SSL/TLS protection is activated from Sophos Central > Endpoint Protection > Base Policy, I encounter problems to access Public Administration/bank/taxes sites. I know that it's because it is not possible to decrypt their traffic. So I use exceptions. However, to login in some of those pages it is needed to use certificates and, despite having those webs as exceptions, I can't login into them. If I deactivate the SSL/TLS protection I indeed can. I don't want that though.

Even I have added those webs in the Firewall as exceptions of TLS/SSL and certificate analysis.

Can someone help me please? Any idea?

Thanks :)