I asked Hostinger support to increase the timeout limit and their reply is:
(Since the changes to the .htaccess and wp-config.php files haven’t resolved the issue, it seems that the server-level configuration is overriding these settings. In shared hosting environments, certain limits are set for server resources to ensure stability and performance for all users on the platform. )

1. ) I have changed the @ini_set(‘max_execution_time’, 600); in the wp-config.php
2.) I have changed the php_value max_execution_time 600 in the .htaccess file also.
3.) I have also Increased the PHP Memory Limit define(‘WP_MEMORY_LIMIT’, ‘256M’); in the wp-config.php file.

Still, the issue hasn’t been resolved it gives the same error and in my current plan the max time-out limit can’t be changed in php.ini and also I cannot change my plan,. So, kindly please help me by importing the (Electronics 2) theme manually in small chunks in (wp-content/upload) or some other method if possible.

If the situation can’t be resolved I would like a refund of my purchase as I cannot use the theme due to this theme import error.

Thank You,
Regards,
Hasan