Change "Register" to "Purchase"

I’m sorry, but the plugin doesn’t support changing the value of the Register button.

You can change the Register to Purchase Tickets through regex. Create a file get-text.php and put the following php code in it. Then in wp-content create a directory mu-plugin and ftp the get-text.php file to mu-plugin directory. The Register will display as “Purchase Tickets” on your WordPress front nd.

<?php
function my_em_text_rewrites($translation, $orig, $domain) {
	switch ($orig) {
		case 'Register' :
			$translation = 'Purchase Ticket';
			break;
//		case 'Repeat this again for what you want to translate (needs to be exactly same text in english)' :
//			$translation = 'your text here';
//			break;
	}
	return $translation;
}
add_action ( 'gettext', 'my_em_text_rewrites', 1, 3 );
?>