I added updated version of Sunrise.php file and also updated variable define('SUNRISE', 'on'); in wp-config.php as instructed but still no luck .
Error 1 : You are using an old version of /var/www/html/wp-content/sunrise.php file. Please, replace that file with a new version which is located by following path: /var/www/html/wp-content/plugins/domain-mapping/sunrise.php.
Error 2 : If you've not already added define('SUNRISE', 'on'); then please do so. If you added the constant be sure to uncomment this line: //define('SUNRISE', 'on'); in the wp-config.php file.
I am not able to get hold of anyone on the chat. It says I am no.1 in the queue and will take apx 8 minutes but there is no luck in getting live help. Seems like live support takes forever sometimes.