Translations:ComfortUpdate/29/en
From LimeSurvey Manual
No server answer - The ComfortUpdate server is not responding
Starting December 2022 the connection default to our updated server was changed to only use SSL. This requires that the OpenSSL PHP library on your server is properly configured and activated and that your server is allowed to connect by HTTP SSL connection to the outside (to our server comfortupdate.limesurvey.org). If one of these requirements is not met, you will get this message. A temporary workaround (which we don't recommend) is to disable this requirement in the /application/config/updater_version.php by setting
$config['comfort_update_server_ssl'] = 0;