SSO configuration issue

SSO configuration issue

Hi to all,

I am trying to setup my test environment on OneLogin portal for Zoho Mail SAML authentication.
For this, I use a special application connector (SAML Test Connector (IdP)), since Zoho Mail in my case is hosted on EU servers, and the templates from the OneLogin library are not configured for this.

But after authenticating through my Zoho portal I get this message:

Incorrect Subject confirmation The recipient attribute does not match with the current URL target. Please verify your SAML response and try again.
Could you please help me to solve this problem and complete the configuration of the application connector?