[Koha] ssl for koha login

Hi I´m trying to setup a ssl connection to Koha (using letsEncrypt certs ) so my users, admin and opac can have a secure connection. I´ve folllowed letsEncrypt & certbot instrucctions but neither opac nor admin pages work. I´ve tried directing connections manually and configuring apache for redirect unsuccessfully. Any hints on this? This is mostly to avoid the upcoming chrome config where it will display an unsafe site warning to any site requiring login that does not use ssl Regards, Alvaro