Rss does not return Thumb in wordpress

Well, I'm trying to list posts from another site via RSS. Everything appears except the thumbs of the images ..

My result and code is this:

NOTE:IhaveaccesstothefileserverwhereIamtryingtopulltheposts,ifanyoneknowsanalternativetothis,pleaseinformme...CODEBELOW:

<?phpif(isset($_GET["xml-feed"])) {
        $strXml   = file_get_contents("http://www.euvosescrevi.com.br/feed/");
        $xml      = simplexml_load_string($strXml, "SimpleXMLElement", LIBXML_NOCDATA);
        $json     = json_encode($xml);
        $array    = json_decode($json, true);
        $arrItens = (array) isset($array["channel"]["item"]) ? $array["channel"]["item"] : "";  
        if (count($arrItens) > 0) {
    ?>

    <hr>
    <div class="blog-posts row margin-bottom-60">
        <?php
        $countItens = 0;
        foreach ($arrItens as $arr) {
            if ($countItens >= 2) break;
            $title = $arr["title"];
            $link = $arr["link"];
            $pubDate = date("d/m/Y", strtotime($arr["pubDate"]));
            $description = word_count(strip_tags($arr["description"]), 50);
            $countItens++;
        ?>

        <div class="col-md-6 col-sm-6">
            <h2><?php echo $title; ?></h2>
            <ul class="blog-info">
                <li><i class="fa fa-calendar"></i> <?php echo $pubDate; ?></li>
            </ul>
            <p><?php echo $description; ?></p>
            <p><a class="more" href="<?php echo $link; ?>" target="_blank">Leia mais <i class="fa fa-angle-right"></i></a></p>
        </div>
    </div>