BuddyPress.org

@sachin550

That Line is in https://buddypress.trac.wordpress.org/browser/tags/2.0.2/buddypress.pot#L6005

Have a look at https://codex.buddypress.org/getting-started/customizing/customizing-labels-messages-and-urls/ to customise.

For this i have modified /wp-content/plugins/buddypress/bp-themes/bp-default/registration/register.php

@sachin550 Are you using the BP Default theme or a child theme of BP Default? If not, then you should not modify that file. Instead, create a child theme of your WP theme of choice, create a folder named buddypress in that child theme folder and copy over https://buddypress.trac.wordpress.org/browser/trunk/src/bp-templates/bp-legacy/buddypress/members/register.php following the directory structure and revise it.

Perhaps purge your navigator history or site cache if you use one.

there are only two files […] which need to be modified.

False.

If you use the old BP-default theme, you only modify a copy of bp-themes/bp-default/registration/register.php placed in your child-theme

If you use any other theme, you modify only bp-legacy/buddypress/members/register.php
placed in the child /your-child-theme/buddypress/members/register.php

The one or the other, but not both. And don’t forget that you should never modify core files, as your work will be lost at the next BP update. That’s why child-theme exist and is so important for customization.

If this change doesn’t work (but it should), you have to try something different.

Create a language file containing only the mentionned string.
Read here.

Do you already use a language file ? §Is your site in english ? If not indicate the used language.
And gave your plugin list and theme name. It could be you have somewhere a conflict with ajax who block something on the registration page.

ok, supposing you did a translation file (even if you use english by default) to test the above solution and assuming it hasn’t work, let’s try the hard way.

Add this to functions.php, it will force gettext to translate the string.

function bpfr_force_translation( $translated, $original_text, $domain ) {
		
	if ( 'buddypress' !== $domain )  
	return $translated; 
	
	switch ( $original_text ) {
		
		case 'Registering for this site is easy, just fill in the fields below and we'll get a new account set up for you in no time.':
		return 'Join PushkarGuide.com - share your experience, thoughts about this pretty town Pushkar (INDIA).';
		
		default:
		return $translated;
	}
}
add_filter( 'gettext', 'bpfr_force_translation', 10, 3 );

If it doesn’t work i have no other solution to propose.