How to display graphs from an (external hosted) extranet

Cacti version : 1.2.11

Cookie domain option changed : my-domain.net - file : /usr/share/cacti/site/include/config.php

CSRF token is fixed : 'sid:af0face4d4b906e1dccb1496b9d3ce2d22ba2365,1584620899' - file : include/vendor/csrf/csrf-magic.php

Cookie SameSite option changed as 'None': - file : /etc/apache2/conf-enabled/cacti.conf

Cacti server

VM : cacti.my-domain.net => Public IP Y.Y.Y.Y

Apache version : 2.4.25

PHP version : 7.0.19-1

Extranet server

VM : - extranet.my-domain.net => Public IP Z.Z.Z.Z

Apache version : 2.4.10

PHP version : 5.6.40-0

Browsers working :

Internet Explorer 11.xx

Browsers NOT working :

Chrome 80.xx

Firefox 74

Safari 5.1.7