Sam Akain case they try to change the code order so you need to know what code to edit in that file instead of relying on line numbers, so here is the code which we need to comment out by adding /** before it and **/ after it.
the code is:
if ( !!$product_names ) {
$start = '<span style="display:inline-block; padding:3px 10px; margin: 0 10px 10px 0; background: #f1f1f1; border-radius: 4px;">';
$end = '</span>';
$product_list = '' . $start . implode( $end . $start, $product_names ) . $end . '';
$activation_url = $this->lru_esnecil_teg();
$c = str_replace( '##y2cgKsAXLQ##', '', '##y2cgKsAXLQ##y##y2cgKsAXLQ##i##y2cgKsAXLQ##t##y2cgKsAXLQ##h##y2cgKsAXLQ##-l##y2cgKsAXLQ##i##y2cgKsAXLQ##c##y2cgKsAXLQ##e##y2cgKsAXLQ##n##y2cgKsAXLQ##s##y2cgKsAXLQ##e##y2cgKsAXLQ##-##y2cgKsAXLQ##n##y2cgKsAXLQ##o##y2cgKsAXLQ##t##y2cgKsAXLQ##i##y2cgKsAXLQ##c##y2cgKsAXLQ##e##y2cgKsAXLQ##' );
?>
">
%s %s:', _x( 'Warning!', "[Part of]: Warning! You didn't set license key for the following products:[Plugins List] which means you're missing out on updates and support. Enter your license key, please.", 'yith-plugin-upgrade-fw' ), _x( "You didn't set license key for the following YITH products", "[Part of]: Warning! You didn't set license key for the following products:[Plugins List] which means you're missing out on updates and support. Enter your license key, please.",'yith-plugin-upgrade-fw' ) ); ?>
%s, %s",
_x( "which means you're missing out on updates and support", "[Part of]: Warning! You didn't set license key for the following products:[Plugins List] which means you're missing out on updates and support. Enter your license key, please.", 'yith-plugin-upgrade-fw' ),
$activation_url,
_x( 'Enter your license key', "[Part of]: Warning! You didn't set license key for the following products:[Plugins List] which means you're missing out on updates and support. Enter your license key, please.", 'yith-plugin-upgrade-fw' ),
_x( 'please', "[Part of]: Warning! You didn't set license key for the following products:[Plugins List] which means you're missing out on updates and support. Enter your license key, please.", 'yith-plugin-upgrade-fw' )
); ?>
<?php
}