How to change default messages?
If you want to change default messages of the Registration Form, you can use any translation plugins or you can modify them using the available filter: pp_rf_custom_messages
To modify the messages using the filter, please add the following code to your current theme’s functions.php file:
add_filter( 'pp_rf_custom_messages', function( $messages ) {
$messages['no_message'] = 'Registration successful!';
$messages['on_fail'] = 'An error occurred. Please try again.';
$messages['field_required'] = 'This field is required.';
$messages['already_registered'] = 'You are already registered.';
return $messages;
} );
After adding the code you just need to change the text.