I have checked and found the issue you are describing while visiting the website frontend. But unfortunately, it does not provide much information about the error behind it.
What I assume there might be some Fatal error which is the reason behind your issue, I would suggest you add the debug setup in the wp-config.php file to log the errors into the file name debug.log inside the wp-content folder.
// Enable WP_DEBUG mode
define( 'WP_DEBUG', true );
// Enable Debug logging to the /wp-content/debug.log file
define( 'WP_DEBUG_LOG', true );
// Disable display of errors and warnings
define( 'WP_DEBUG_DISPLAY', false );
//SET PHP INI DISPLAY ERROR FALSE
@ini_set( 'display_errors', 0 );
Please find the video that will help you to edit wp-config.php and add the above code: https://www.youtube.com/watch?v=3SDPTafEM8o
Please let us know the errors logged into the debug.log file along with the FTP/CPanel credentials for further investigation if the error is related to our theme or bundled plugin.